This patch updates the code and associated tests to change from
directly calling the tripleo.deployment.overcloudrc action to
calling the tripleo.deployment.v1.create_overcloudrc workflow.
Change-Id: Ib100163a5c9a5d2e6cca6cbc5a186e8e5cbc19ce
Depends-On: I6074b4085b5b77f010f5f2972e7b120aa344f6c5
Partial-Bug: 1640436