Sanity: test_vcenter_vm_interface_change fails due to usage of Project_Id

[Sarath]

Part of recent fix below the project_id is used and this scenario not applicable to Vcenter-only.
-----------------
In VM Fixture read the VNobj with project_id
Install flavor if it isn't available
Closes-bug: 1634212
Change-Id: I43b0659dabc9ea7c9d09992bf5fc4daf403c1942
commit 86bfe8fd1b415b7ccfb545c3eda453f8c9b3dca8
------------------

The below is the failure of test errors
2017-02-15 14:27:59,572 - DEBUG - VN ctest-net1-73316951 is not present in Agent 10.204.216.181
2017-02-15 14:27:59,580 - DEBUG - VN ctest-net1-73316951 is not present in Agent 10.204.216.182
2017-02-15 14:27:59,587 - DEBUG - VN ctest-net1-73316951 is not present in Agent 10.204.216.183
2017-02-15 14:27:59,587 - INFO - Validated that VN ctest-net1-73316951 is not in any agent
2017-02-15 14:27:59,608 - INFO - Validated that Routing instances and Config db in Control-nodes does not have VN ctest-net1-73316951 info
2017-02-15 14:28:07,036 - ERROR - <type 'exceptions.AttributeError'>
Python 2.7.6: /usr/bin/python
Wed Feb 15 14:26:09 2017

A problem occurred in a Python script. Here is the sequence of
function calls leading up to the error, in the order they occurred.

 /contrail-test/tcutils/wrappers.py in wrapper(self=<scripts.vm_regression.test_vcenter.TestVcenter....r_vm_interface_change[vcenter] id=0x7ff81ccd7450>, *args=(), **kwargs={})
   71 log.info('Initial checks done. Running the testcase now')
   72 log.info('')
   73 result = function(self, *args, **kwargs)
   74 except KeyboardInterrupt:
   75 raise
result = None
function = <function test_vcenter_vm_interface_change>
self = <scripts.vm_regression.test_vcenter.TestVcenter....r_vm_interface_change[vcenter] id=0x7ff81ccd7450>
args = ()
kwargs = {}

 /contrail-test/scripts/vm_regression/test_vcenter.py in test_vcenter_vm_interface_change(self=<scripts.vm_regression.test_vcenter.TestVcenter....r_vm_interface_change[vcenter] id=0x7ff81ccd7450>)
  126 "Ping from %s to %s is expected to fail" % (vm2_fixture.vm_name, vm1_fixture.vm_name)
  127 vm1_fixture.orch.change_network_to_vm(vm1_fixture.vm_obj,vn2_fixture.vn_name)
  128 vm1_fixture.read()
  129 assert vm1_fixture.verify_on_setup()
  130 assert vm2_fixture.ping_with_certainty(dst_vm_fixture=vm1_fixture),\
vm1_fixture = <vm_test.VMFixture object>
vm1_fixture.read = <bound method VMFixture.read of <vm_test.VMFixture object>>

 /contrail-test/fixtures/vm_test.py in read(self=<vm_test.VMFixture object>)
  161 self.vn_names = self.orch.get_networks_of_vm(self.vm_obj)
  162 self.vn_objs = [self.orch.get_vn_obj_if_present(x, project_id=self.connections.project_id)
  163 for x in self.vn_names]
  164 self.vn_ids = [self.orch.get_vn_id(x) for x in self.vn_objs]
  165 self.vn_fq_names = [':'.join(self.vnc_lib_h.id_to_fq_name(x))
x = 'ctest-net2-41626313'
self = <vm_test.VMFixture object>
self.vn_names = ['ctest-net2-41626313']
<type 'exceptions.AttributeError'>: ContrailConnections instance has no attribute 'project_id'
    __class__ = <type 'exceptions.AttributeError'>
    __delattr__ = <method-wrapper '__delattr__' of exceptions.AttributeError object>
    __dict__ = {}
    __doc__ = 'Attribute not found.'
    __format__ = <built-in method __format__ of exceptions.AttributeError object>
    __getattribute__ = <method-wrapper '__getattribute__' of exceptions.AttributeError object>
    __getitem__ = <method-wrapper '__getitem__' of exceptions.AttributeError object>
    __getslice__ = <method-wrapper '__getslice__' of exceptions.AttributeError object>
    __hash__ = <method-wrapper '__hash__' of exceptions.AttributeError object>
    __init__ = <method-wrapper '__init__' of exceptions.AttributeError object>
    __new__ = <built-in method __new__ of type object>
    __reduce__ = <built-in method __reduce__ of exceptions.AttributeError object>
    __reduce_ex__ = <built-in method __reduce_ex__ of exceptions.AttributeError object>
    __repr__ = <method-wrapper '__repr__' of exceptions.AttributeError object>
    __setattr__ = <method-wrapper '__setattr__' of exceptions.AttributeError object>
    __setstate__ = <built-in method __setstate__ of exceptions.AttributeError object>
    __sizeof__ = <built-in method __sizeof__ of exceptions.AttributeError object>
    __str__ = <method-wrapper '__str__' of exceptions.AttributeError object>
    __subclasshook__ = <built-in method __subclasshook__ of type object>
    __unicode__ = <built-in method __unicode__ of exceptions.AttributeError object>
    args = ("ContrailConnections instance has no attribute 'project_id'",)
    message = "ContrailConnections instance has no attribute 'project_id'"

The above is a description of an error in a Python program. Here is
the original traceback:

Traceback (most recent call last):
  File "tcutils/wrappers.py", line 73, in wrapper
    result = function(self, *args, **kwargs)
  File "scripts/vm_regression/test_vcenter.py", line 128, in test_vcenter_vm_interface_change
    vm1_fixture.read()
  File "/contrail-test/fixtures/vm_test.py", line 163, in read
    for x in self.vn_names]
AttributeError: ContrailConnections instance has no attribute 'project_id'

[Sarath (nsarath)]

Fix is to call self.orch.get_vn_obj_if_present(x) without project-id when involving scenario Vcenter-only

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29007
Submitter: Sarath (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29087
Submitter: Sarath (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29088
Submitter: Sarath (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29089
Submitter: Sarath (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/29007
Committed: http://github.org/Juniper/contrail-test-ci/commit/4c618bcee14ff4acbcc08394f9453f0c90207863
Submitter: Zuul (<email address hidden>)
Branch: master

commit 4c618bcee14ff4acbcc08394f9453f0c90207863
Author: sarath <email address hidden>
Date: Wed Feb 22 07:04:14 2017 +0530

VM fixture read to handle vmware vcenter-only mode
Closes-Bug:#1666740

Change-Id: I2905faae6b5d4a0e455456ff54158b967b0bbe47

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/29089
Committed: http://github.org/Juniper/contrail-test-ci/commit/4d6634871b22cc9f3c6e30c7247605f6db6c4337
Submitter: Zuul (<email address hidden>)
Branch: R3.2

commit 4d6634871b22cc9f3c6e30c7247605f6db6c4337
Author: sarath <email address hidden>
Date: Fri Feb 24 07:02:13 2017 +0530

VM fixture read to handle vmware vcenter-only mode
Closes-Bug:#1666740

Change-Id: Iabd53027ac0750f16d2a0878dc997e057f5b94c9

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/29087
Committed: http://github.org/Juniper/contrail-test-ci/commit/0ce10defb4f1abd23cf27ca558e5b1ff363e80b5
Submitter: Zuul (<email address hidden>)
Branch: R3.0

commit 0ce10defb4f1abd23cf27ca558e5b1ff363e80b5
Author: sarath <email address hidden>
Date: Fri Feb 24 06:57:09 2017 +0530

VM fixture read to handle vmware vcenter-only mode
Closes-Bug:#1666740

Change-Id: I1124815492846f68eaee4ad92a83e7f32773a10c

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/29088
Committed: http://github.org/Juniper/contrail-test-ci/commit/38e300af82ea9bfb68a914e6717623590d5b4e66
Submitter: Zuul (<email address hidden>)
Branch: R3.1

commit 38e300af82ea9bfb68a914e6717623590d5b4e66
Author: sarath <email address hidden>
Date: Fri Feb 24 07:00:06 2017 +0530

VM fixture read to handle vmware vcenter-only mode
Closes-Bug:#1666740

Change-Id: I057c74092809621b289ae290da5c6d4bcf5e7962

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40095
Submitter: Ankit Jain (<email address hidden>)