Add tests to cover service_profile

This patch set adds test to cover the service_profile API [0].
Tests create_service_profile, get_service_profile,
update_service_profile, delete_service_profile.
Part of "Increase Neutron RBAC Coverage" initiative [1]

[0] https://developer.openstack.org/api-ref/network/v2/#networking-flavors-framework-v2-0-current-flavor-service-profile
[1] https://storyboard.openstack.org/#!/story/2002641

Co-Authored-By: Mykola Yakovliev <vegasq@gmail.com>
Change-Id: I57c6d44eaa891e83931924f0d802ccd79a79439b
Story: 2002641
Task: 22317
4 files changed