k8s_json_patch: support the hidden_fields param (#964)

SUMMARY
Add support for hidden_fields on k8s_json_patch

ISSUE TYPE

Feature Pull Request

COMPONENT NAME
k8s_json_patch
ADDITIONAL INFORMATION
Works exactly the same as k8s
Haven't pushed the doc yet, because of many changes. Will do it on a separate commit if the tests pass.
1st commit here, sorry if I forget some things.
Thanks!

Reviewed-by: Bianca Henderson <beeankha@gmail.com>
Reviewed-by: Alina Buzachis
Reviewed-by: Frank Villaro-Dixon <frank@villaro-dixon.eu>

plugins/modules/k8s_json_patch.py

@@ -33,6 +33,14 @@ options:
     aliases:
       - api
       - version
+  hidden_fields:
+    description:
+      - List of fields to hide from the diff output.
+      - This is useful for fields that are not relevant to the patch operation, such as `metadata.managedFields`.
+    type: list
+    elements: str
+    default: []
+    version_added: 6.1.0
   kind:
     description:
       - Use to specify an object model.
@@ -147,6 +155,7 @@ from ansible_collections.kubernetes.core.plugins.module_utils.k8s.exceptions imp
 )
 from ansible_collections.kubernetes.core.plugins.module_utils.k8s.service import (
     diff_objects,
+    hide_fields,
 )
 from ansible_collections.kubernetes.core.plugins.module_utils.k8s.waiter import (
     get_waiter,
@@ -174,6 +183,7 @@ JSON_PATCH_ARGS = {
     "namespace": {"type": "str"},
     "name": {"type": "str", "required": True},
     "patch": {"type": "list", "required": True, "elements": "dict"},
+    "hidden_fields": {"type": "list", "elements": "str", "default": []},
 }
 
 
@@ -203,6 +213,7 @@ def execute_module(module, client):
     namespace = module.params.get("namespace")
     patch = module.params.get("patch")
 
+    hidden_fields = module.params.get("hidden_fields")
     wait = module.params.get("wait")
     wait_sleep = module.params.get("wait_sleep")
     wait_timeout = module.params.get("wait_timeout")
@@ -260,13 +271,13 @@ def execute_module(module, client):
             module.fail_json(msg=msg, error=to_native(exc), status="", reason="")
 
     success = True
-    result = {"result": obj}
+    result = {"result": hide_fields(obj, hidden_fields)}
     if wait and not module.check_mode:
         waiter = get_waiter(client, resource, condition=wait_condition)
         success, result["result"], result["duration"] = waiter.wait(
             wait_timeout, wait_sleep, name, namespace
         )
-    match, diffs = diff_objects(existing.to_dict(), obj)
+    match, diffs = diff_objects(existing.to_dict(), obj, hidden_fields)
     result["changed"] = not match
     if module._diff:
         result["diff"] = diffs