Sorting services list before asserting in
test_get_service_list test

Change-Id: I246200147d2e81c65a1f7bc6e1bb1ec474e02aa4
Fixes: bug 1206768
Switching to oslo importutils in the stress tests

The importutils is helper module for dynamic class and module,
 loading.

The importutils is compatible with python 2.6 and it is
used in multiple other openstack projects.

The previously used importlib defined with python 2.7.

Change-Id: I4e99ccf9d51cea28584c9d28a4aceab633b3f998
Merge "Switching to oslo importutils in the stress tests"
Merge "Sorting services list before asserting in test_get_service_list test"