remove fs20 master for refresh
remove fs20 master for refresh

Change-Id: I3e6fb620f32d51d9aa0a7b6bf9b00a4a7935e3fb

redhat-openstack/rdo-infra,rdo-infra/ci-config,rdo-infra/ci-config,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config,redhat-openstack/rdo-infra,redhat-openstack/rdo-infra