Integration test for a transient cluster was added

* The test is to create transient cluster (simple cluster with single node)
and wait for cluster deleting. If cluster is not deleted within some timeout
(for example, 3 minutes), error will be handled. EDP job will not be run on
cluster.

* Option to run only test for transient cluster was added.

Implements blueprint trust-support-in-i-tests

Change-Id: Icc69b4706d441798d933feec484b13efae8df380
Merge "Integration test for a transient cluster was added"