This commit moves the quickstart-extras.yml playbook
to tripleo-quickstart-extras repo.
rebase on top of I3956d427dce7f4900e4e31edc5f5a08275a1394f
Closes-bug: #1694737
Depends-On: Ib532b273e802fb0fa24e07026cebb56703d6658b
Change-Id: I15dbc6761282c8e566ddd26ece368e4f2a46fc94