feat(templates): add the ability to connect a template to swarm attachable networks (#642)

app/components/templates/templatesController.js

@@ -122,7 +122,11 @@ function ($scope, $q, $state, $anchorScroll, Config, ContainerService, Container
   function filterNetworksBasedOnProvider(networks) {
     var endpointProvider = $scope.applicationState.endpoint.mode.provider;
     if (endpointProvider === 'DOCKER_SWARM' || endpointProvider === 'DOCKER_SWARM_MODE') {
+      if (endpointProvider === 'DOCKER_SWARM') {
         networks = NetworkService.filterGlobalNetworks(networks);
+      } else { 
+        networks = NetworkService.filterSwarmModeAttachableNetworks(networks);
+      }
       $scope.globalNetworkCount = networks.length;
       NetworkService.addPredefinedLocalNetworks(networks);
     }

app/services/networkService.js

@@ -15,6 +15,14 @@ angular.module('portainer.services')
     });
   };
 
+  service.filterSwarmModeAttachableNetworks = function(networks) {
+    return networks.filter(function (network) {
+      if (network.Scope === 'swarm' && network.Attachable === true) {
+        return network;
+      }
+    });
+  };
+
   service.addPredefinedLocalNetworks = function(networks) {
     networks.push({Scope: "local", Name: "bridge"});
     networks.push({Scope: "local", Name: "host"});