kubeadm install gets netctl from container

netctl used to be added in the minimal installer, but was removed.

The binary is in the netplugin container that is run on every node, so
instead of including it in the minimal installer, extract it from the
container.

install/k8s/install.sh

@@ -276,9 +276,17 @@ echo "Applying contiv installation"
 grep -q -F "netmaster" /etc/hosts || echo "$netmaster netmaster" >>/etc/hosts
 echo "To customize the installation press Ctrl+C and edit $contiv_yaml."
 sleep 5
-chmod +x ./netctl
-rm -f /usr/bin/netctl
-cp ./netctl /usr/bin/
+
+# extract netctl from netplugin container
+echo "Extracting netctl from netplugin container"
+netplugin_version=$(
+    sed '/contiv_network_version/!d;s/.*\: \?"\(.*\)".*/\1/' \
+        install/ansible/env.json)
+docker rm netplugin-tmp >/dev/null 2>/dev/null || :
+c_id=$(docker create --name netplugin-tmp contiv/netplugin:$netplugin_version)
+docker cp ${c_id}:/contiv/bin/netctl /usr/bin
+docker rm ${c_id}
+
 # Install Contiv
 $kubectl apply -f $contiv_yaml
 
@@ -287,6 +295,10 @@ for i in {0..150}; do
 	sleep 2
 	# check contiv netmaster pods
 	$kubectl get pods -n kube-system | grep -v "Running" | grep -q ^contiv-netmaster  && continue
+	break
+done
+for i in {i..150}; do
+	sleep 2
 	# check that netmaster is available
 	netctl tenant ls >/dev/null 2>&1 || continue
 	break