[DIB?] EDP integration tests don't work with images for Vanilla plugin built with diskimage-builder

[Sergey Kolekonov]

EDP integration tests do not work with images built with diskimage-builder and savanna-image-elements.

Steps to reproduce:

- Clone savanna-image-elements repository.
- Execute sudo bash diskimage-create.sh -p vanilla
- Upload the output image ubuntu_savanna_latest.qcow2 to Glance and register it with Savanna
- Run EDP integration tests using this image (ensure that you have SKIP_EDP_TEST = False in your itests.conf)

Expected result:

All tests succeeded.

Actual result:

Integration tests fails with the following error:
FAIL: tests.gating.test_vanilla_gating.VanillaGatingTest.test_vanilla_plugin_gating
tags: worker-0
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Traceback (most recent call last):
  File "/home/skolekonov/savanna/savanna/tests/integration/tests/gating/test_vanilla_gating.py", line 293, in test_vanilla_plugin_gating
    self.print_error_log(message, e)
  File "savanna/openstack/common/excutils.py", line 68, in __exit__
    six.reraise(self.type_, self.value, self.tb)
  File "/home/skolekonov/savanna/savanna/tests/integration/tests/gating/test_vanilla_gating.py", line 276, in test_vanilla_plugin_gating
    mapreduce_configs
  File "savanna/tests/integration/tests/base.py", line 50, in call
    return func(self, *args, **kwargs)
  File "savanna/tests/integration/tests/edp.py", line 184, in edp_testing
    print(str(e))
  File "savanna/openstack/common/excutils.py", line 68, in __exit__
    six.reraise(self.type_, self.value, self.tb)
  File "savanna/tests/integration/tests/edp.py", line 180, in edp_testing
    self._await_job_execution(job_execution)
  File "savanna/tests/integration/tests/edp.py", line 49, in _await_job_execution
    self.fail('Job status == \'KILLED\'.')
  File "/home/skolekonov/savanna/.tox/integration/local/lib/python2.7/site-packages/unittest2/case.py", line 415, in fail
    raise self.failureException(msg)
AssertionError: Job status == 'KILLED'.
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