Change OpenStack Python SDK gate to experimental
Change OpenStack Python SDK gate to experimental

Change-Id: Idfce909688cf842bc1c89cdd20e6eeaa4de1674d

openstack-infra/project-config,coolsvap/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,Tesora/tesora-project-config,noorul/os-project-config,openstack-infra/project-config,anbangr/osci-project-config,noorul/os-project-config,anbangr/osci-project-config,dongwenjuan/project-config,citrix-openstack/project-config,coolsvap/project-config,citrix-openstack/project-config