deploy_jdn: allow to deploy only on some nodes, but not jenkins

Signed-off-by: Holger Levsen <holger@layer-acht.org>

deploy_jdn

@@ -25,8 +25,14 @@
 # ./deploy_jdn jenkins o167	- deploy on jenkins and osuosl167
 # ./deploy_jdn jenkins c9	- deploy on jenkins and codethink9
 # ./deploy_jdn jenkins 10	- deploy on jenkins and ionos10
-# ./deploy_jdn jenkins 5 6	- deploy on jenkins and ionos6 and ionos6
+# ./deploy_jdn jenkins 5 6	- deploy on jenkins and ionos5 and ionos6
 # ./deploy_jdn jenkins amd64	- deploy on jenkins and all amd64 nodes
+# ./deploy_jdn only ionos10	- deploy on ionos10
+# ./deploy_jdn only o167	- deploy on osuosl167
+# ./deploy_jdn only c9		- deploy on codethink9
+# ./deploy_jdn only 10		- deploy on ionos10
+# ./deploy_jdn only 5 6		- deploy on ionos5 and ionos6
+# ./deploy_jdn only amd64	- deploy on all amd64 only
 # ./deploy_jdn upgrade|u	- run "apt-get update && upgrade && clean" everywhere
 # ./deploy_jdn upgradey|uy	- run "apt-get upgrade -y" everywhere
 # ./deploy_jdn rmstamp|rm	- delete stamp files everywhere
@@ -101,8 +107,12 @@ elif [ "$1" = "check" ] ; then
 elif [ "$1" = "" ] ; then
 	HOSTS=(root@jenkins.debian.net)
 	echo -n "Running j.d.n.git updates on ${HOSTS[@]} now"
-elif [ "$1" = "jenkins" ] ; then
-	HOSTS=(root@jenkins.debian.net)
+elif [ "$1" = "jenkins" ] || [ "$1" = "only" ] ; then
+	if [ "$1" = "jenkins" ] ; then
+		HOSTS=(root@jenkins.debian.net)
+	else
+		HOSTS=()
+	fi
 	shift
 	for i in "$@" ; do
 		case "$i" in