Add Newton to Ocata UpgradeInitCommonCommand

Add Newton to Ocata UpgradeInitCommonCommand

This adds the UpgradeInitCommonCommand for newton..ocata common
UpgradeInit commands. This comes before the ansible upgrade steps
so we need to do things like remove the old newton hieradata and
install the ansible-pacemaker module and ansible heat-agent plugin

This defaults to '' and is set in the major-upgrade-composable-steps
and unset in the major-upgrade-converge environment files.

Change-Id: I0c7a32194c0069b63a501a913c17907b47c9cc16
(cherry picked from commit 01a91d37199f592aa4273e3847eb1f4f1d27da02)