Comment more packages to pass go lint

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

services/containers/service.go

@@ -20,7 +20,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "containers",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.MetadataPlugin,
 		},
 		Init: func(ic *plugin.InitContext) (interface{}, error) {

services/content/service.go

@@ -39,7 +39,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "content",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.ContentPlugin,
 			plugin.MetadataPlugin,
 		},

services/diff/service.go

@@ -26,7 +26,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "diff",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.DiffPlugin,
 		},
 		Config: &config{

services/images/service.go

@@ -20,7 +20,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "images",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.MetadataPlugin,
 		},
 		Init: func(ic *plugin.InitContext) (interface{}, error) {

services/namespaces/service.go

@@ -21,7 +21,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "namespaces",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.MetadataPlugin,
 		},
 		Init: func(ic *plugin.InitContext) (interface{}, error) {

services/snapshot/service.go

@@ -24,7 +24,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "snapshots",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.SnapshotPlugin,
 			plugin.MetadataPlugin,
 		},

services/tasks/service.go

@@ -41,7 +41,7 @@ func init() {
 	plugin.Register(&plugin.Registration{
 		Type: plugin.GRPCPlugin,
 		ID:   "tasks",
-		Requires: []plugin.PluginType{
+		Requires: []plugin.Type{
 			plugin.RuntimePlugin,
 			plugin.MetadataPlugin,
 			plugin.ContentPlugin,