Add possiblity to limit actions to tagged or named repository

config/config_file_parse_test.go

@@ -27,6 +27,8 @@ repositories:
     dest: "example/path"
     name: "custom_example"
   - src: https://github.com/example/example2.git
+    tags:
+    - "example"
 `)
 
 	homedir, _ := os.UserHomeDir()
@@ -43,6 +45,7 @@ repositories:
 				Name: "example2",
 				Src:  "https://github.com/example/example2.git",
 				Dest: "example2",
+				Tags: []string{"example"},
 			},
 		},
 	}