tripleo: add fallback to handle rocky/stein validation library version
tripleo: add fallback to handle rocky/stein validation library version

skydive-project/skydive,skydive-project/skydive,skydive-project/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,skydive-project/skydive,skydive-project/skydive,lebauce/skydive,skydive-project/skydive,lebauce/skydive,skydive-project/skydive