Add python packages for SNI support in tests
Add python packages for SNI support in tests

This adds python packages required for SNI support to ensure that tox
installs the packages into the venv when running tests.

Change-Id: Id3e26c6759d5f8a980946eddfd1203392052973d

openstack/openstack-ansible-galera_client,openstack/openstack-ansible-galera_client