Wait for newly-created networks before continuing

plugin.sh

@@ -14,8 +14,10 @@ create_networks() {
   echo "--- start create_networks ---"
   IFS=',' read -ra NETWORKS <<< "$PLUGIN_NETWORKS"
   for NETWORK in "${NETWORKS[@]}"; do
+    echo "$NETWORK"
     docker -H "$REMOTE_DOCKER_HOST" \
       network create --driver=overlay "$NETWORK" --scope swarm || true
+    until [ -n "$(docker -H "$REMOTE_DOCKER_HOST" network ls -f "name=$NETWORK" -q)" ]; do sleep 1; done
   done
   echo "--- end create_networks ---"
 }
@@ -88,7 +90,6 @@ run_plugin() {
   load_deploy_key
   output_versions
 
-  echo "$PLUGIN_NETWORKS"
   if [ -n "$PLUGIN_NETWORKS" ]; then
     create_networks
   fi