This migrates the above files from tempest. This includes tempest commits:
* security_groups_client.py : I8cfd1845be221ae2e3629cc79ab5fdfd14ac48d4
* test_security_groups_client.py: I3ad6761651cec5e66012d08e6b63322f53286a5c
* security_groups.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: I4076278b92e8166b52deaa0447047f7dc7a3934a