Fixes #833 Move plugin-config outside of tribe cmds

Move the plugin-config command in snapctl outside of tribe commands so
that it can be used when not in tribe mode. The new command will be
underneath the plugin set of commands in snapctl for consistency.

cmd/snapctl/commands.go

@@ -117,6 +117,21 @@ var (
 						flRunning,
 					},
 				},
+				{
+					Name: "config",
+					Subcommands: []cli.Command{
+						{
+							Name:   "get",
+							Usage:  "get <plugin_type>:<plugin_name>:<plugin_version> or get -t <plugin_type> -n <plugin_name> -v <plugin_version>",
+							Action: getConfig,
+							Flags: []cli.Flag{
+								flPluginName,
+								flPluginType,
+								flPluginVersion,
+							},
+						},
+					},
+				},
 			},
 		},
 		{
@@ -198,22 +213,6 @@ var (
 				},
 			},
 		},
-		{
-			Name:  "plugin-config",
-			Usage: tribeWarning,
-			Subcommands: []cli.Command{
-				{
-					Name:   "get",
-					Usage:  "get <plugin_type>:<plugin_name>:<plugin_version> or get -t <plugin_type> -n <plugin_version> -v <plugin_version>",
-					Action: getConfig,
-					Flags: []cli.Flag{
-						flPluginName,
-						flPluginType,
-						flPluginVersion,
-					},
-				},
-			},
-		},
 	}
 )