Allow user to extend kinds without overriding defaults

Instead of overriding all defaults when defining new mappings, the
user defined ones are added at the top, so you do not have redefine
all of them if you only want to tune one.

.ansible-lint

@@ -59,3 +59,13 @@ extra_vars:
 # Uncomment to enforce action validation with tasks, usually is not
 # needed as Ansible syntax check also covers it.
 # skip_action_validation: false
+
+# List of additional kind:pattern to be added at the top of the default
+# match list, first match determines the file kind.
+# kinds:
+#   - playbook: "**/examples/*.{yml,yaml}"
+#   - galaxy: "**/folder/galaxy.yml"
+#   - tasks: "**/tasks/*.yml"
+#   - vars: "**/vars/*.yml"
+#   - meta: "**/meta/main.yml"
+#   - yaml: "**/*.YML"

src/ansiblelint/cli.py

@@ -10,6 +10,7 @@
 
 import yaml
 
+from ansiblelint.config import DEFAULT_KINDS
 from ansiblelint.constants import (
     CUSTOM_RULESDIR_ENVVAR,
     DEFAULT_RULESDIR,
@@ -358,6 +359,11 @@ def merge_config(file_config: Dict[Any, Any], cli_config: Namespace) -> Namespac
     for entry, value in file_config.items():
         setattr(cli_config, entry, value)
 
+    # append default kinds to the custom list
+    kinds = getattr(file_config, 'kinds', [])
+    kinds.extend(DEFAULT_KINDS)
+    setattr(cli_config, 'kinds', kinds)
+
     return cli_config
 
 

src/ansiblelint/config.py

@@ -67,7 +67,7 @@
     tags=[],
     verbosity=False,
     warn_list=[],
-    kinds=DEFAULT_KINDS,
+    kinds=[],
     mock_modules=[],
     mock_roles=[],
     loop_var_prefix=None,