request-pull: filter out SSH/X.509 tag signatures

git request-pull filters PGP signatures out of the tag message, but not
SSH or X.509 signatures.

Signed-off-by: Gwyneth Morgan <gwymor@tilde.club>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-request-pull.sh

@@ -153,7 +153,7 @@ for you to fetch changes up to %H:
 if test $(git cat-file -t "$head") = tag
 then
 	git cat-file tag "$head" |
-	sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
+	sed -n -e '1,/^$/d' -e '/^-----BEGIN \(PGP\|SSH\|SIGNED\) /q' -e p
 	echo
 	echo "----------------------------------------------------------------"
 fi &&