Support systemd unit management during node join

- Support systemctl enable/start/stop/disable commands during join.sh
  or genesis.sh

Change-Id: I28046afbc55fc1d1af4575778f614f928f0e91c9

promenade/templates/include/up.sh

@@ -105,6 +105,13 @@ log
 log === Starting Docker and Kubelet ===
 set -x
 systemctl daemon-reload
+
+{% for a in ['enable','start','stop','disable'] %}
+{% for u in config.get_units_by_action(a) %}
+systemctl {{ a }} {{ u }}
+{% endfor %}
+{% endfor %}
+
 systemctl restart docker || true
 systemctl enable kubelet
 systemctl restart kubelet