Add 'cookied-mcp-ocata-dop-sl2' lab for DOP+SLv2

* add workflow template and fuel-devops config
* add new environment inventory file with mixed roles on nodes
* add MAKE_SNAPSHOT_STAGES (default=true) to skip snapshots
  during deploy and not cause timesync and keepalived issues

Change-Id: I29a504b783a017ef01d0b05535c3a03e7b1574c9
Reviewed-on: https://review.gerrithub.io/378776
Reviewed-by: Dennis Dmitriev <dis.xcom@gmail.com>
Tested-by: Dennis Dmitriev <dis.xcom@gmail.com>
diff --git a/tcp_tests/managers/envmanager_empty.py b/tcp_tests/managers/envmanager_empty.py
index b9ab8e1..b543c87 100644
--- a/tcp_tests/managers/envmanager_empty.py
+++ b/tcp_tests/managers/envmanager_empty.py
@@ -54,7 +54,7 @@
         raise Exception("EnvironmentManagerEmpty doesn't have SSH details. "
                         "Please provide SSH details in config.underlay.ssh")
 
-    def create_snapshot(self, name, description=None):
+    def create_snapshot(self, name, **kwargs):
         """Store environmetn state into the config object
 
         - Store the state of the environment <name> to the 'config' object