This adds a directive to ignore a release note that we only want to show
up in a stable branch.
It also cleans up a previous instance of this where we needed to have
the ignore follow the release after stable branch creation.
Change-Id: I484bcb8aaa78548ddf2ef9063f689d533b1c692c
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
c50494a70b