Scenario:
1. Create murano environment
2. Create session for create environment.
3. Initialize k8s cluster parameters and add app to env.
4. Initialize k8s pod parameters and add app to env.
5. Deploy session.
7. Check env status and port availability on k8s master node.
8. Get k8s minions' ips and check that correct initial number
of them was created and k8s api port is available on them.
9. Run 'scaleNodesUp' action for k8s minions.
10. Check that number of minions was increased and
k8s api port is available on all of them
11. Run 'scaleNodesDown' action for k8s minions.
12. Check that number of minions was decreased and
k8s api port is available on all of them
Change-Id: I63bf61b6f9e5fd45b8e6bde0fab87da5826bedc6
a143e7c707