* new option --safe-gerrit-host in branching scripts for specifying
gerrit hosts that are safe for pushing reviews to. Allows us to create
gerrit reviews for repos not hosted on opendev.org
* new option --manifest-file for overriding default.xml location, in
case the manifest <include>s a file whose name can't be deduced
automatically
* new option --dry-run in push_* scripts
Story: 2008998
Task: 42661
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>
Change-Id: I8e7395f7d64c5dfb8936f747d8bea65be22120fd