[system-tests]Index error in l3 failover tests

[Tatyanka]

http://jenkins-product.srt.mirantis.net:8080/job/6.1.system_test.centos.ha_neutron_destructive/71/testReport/%28root%29/neutron_l3_migration_after_destroy/neutron_l3_migration_after_destroy/?

Error Message

list index out of range

Stacktrace

Traceback (most recent call last):
  File "/usr/lib/python2.7/unittest/case.py", line 331, in run
    testMethod()
  File "/usr/lib/python2.7/unittest/case.py", line 1043, in runTest
    self._testFunc()
  File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/case.py", line 296, in testng_method_mistake_capture_func
    compatability.capture_type_error(s_func)
  File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/compatability/exceptions_2_6.py", line 27, in capture_type_error
    func()
  File "/home/jenkins/venv-nailgun-tests-2.9/local/lib/python2.7/site-packages/proboscis/case.py", line 350, in func
    func(test_case.state.get_state())
  File "/home/jenkins/workspace/6.1.system_test.centos.ha_neutron_destructive/fuelweb_test/helpers/decorators.py", line 66, in wrapper
    return func(*args, **kwargs)
  File "/home/jenkins/workspace/6.1.system_test.centos.ha_neutron_destructive/fuelweb_test/tests/tests_strength/test_neutron.py", line 282, in neutron_l3_migration_after_destroy
    devops_node = self.get_node_with_dhcp(self, os_conn, net_id)
  File "/home/jenkins/workspace/6.1.system_test.centos.ha_neutron_destructive/fuelweb_test/tests/tests_strength/test_neutron.py", line 34, in get_node_with_dhcp
    node = os_conn.get_node_with_dhcp_for_network(net_id)[0]
IndexError: list index out of range

[Andrey Sledzinskiy (asledzinskiy)]

I didn't observe this issue yesterday, but I think we should simply add some check in case we get empty list to avoid it. So it can be moved to 7.0 with medium priority