This migrates the above files from tempest. This includes tempest commits:
* security_group_rules_client.py: If8c82c978d269f59f4606b65b25e1eace20e9b4a
* test_security_group_rules_client.py: I2df27f5603a46eb8454556e410b2feea5ab22539
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: I2be5d9983dd31a2af455fdb5c495227f22b3f575