Plugin samples link is updated with openstack repository and "doc" in link is removed. And link for rally gates is updated Change-Id: I8a380fea7bdb66f94af7f1819f6c9cba1e13c0fc Closes-Bug: #1491982
This change adds configuration directory for rally. Implements blueprint rally-gate-check Change-Id: I49ed3025bb90355b851526af9b5a469c7c84fdc9