Fixing branch in charm build

First time testing with a non-production branch, need to use the branch
name in the final charm revision

Change-Id: I95f72d04c498310fd03eebc22b59fd2cc8aa6d46
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
(cherry picked from commit 54b4d430ae9f77cef482da7f2e7865e5ea498324)
1 file changed