This migrates the above files from tempest. This includes tempest commits:
* security_group_default_rules_client.py: Ie39cb8a0d710c1412836f93ce6b3df60faad9f76
* test_security_group_default_rules_client.py: I3ad6761651cec5e66012d08e6b63322f53286a5c
* security_group_default_rule.py: Ica929c402a3d042ae751302384e68853eb28b405
to see the commit history for these files refer to the above Change-Ids in the tempest repository
Partially implements blueprint migrate-service-clients-to-tempest-lib
Change-Id: I8b652aeb82d2a7335212ef7cc021a969ad297c6a