The tagBuildBypass and untagBuildBypass invocations in the clone-tag
CLI were not setting the notify option, leaving it at the default of
True. This means in some cases many hundreds of notification events
would be triggered from a clone-tag call.
Change the default behavior of clone-tag to explicitly disable
notifications
Add a new --notify option to clone-tag to re-enable notifications for
tagging and untagging of builds.
Fixes: #1890
ff1996564c