Respect notify option when pushing new changes

Users can add a notify option to the push spec to control to whom
email notifications should be sent, but the notify option had no
effect when a new change was pushed.

Change-Id: Ie802526ef486f3a36da1b4ac6ec4ada07026efa1
Signed-off-by: Edwin Kempin <ekempin@google.com>

gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommits.java

@@ -1775,6 +1775,7 @@ public class ReceiveCommits {
             .setExtraCC(recipients.getCcOnly())
             .setApprovals(approvals)
             .setMessage(msg)
+            .setNotify(magicBranch.notify)
             .setRequestScopePropagator(requestScopePropagator)
             .setSendMail(true)
             .setUpdateRef(true));