Extend hidden_fields to allow more complicated field definitions (#872) (#887)

This is a backport of PR #872 as merged into main (9ec6912).
SUMMARY
This allows us to ignore e.g. the last-applied-configuration annotation by specifying
metadata.annotations[kubectl.kubernetes.io/last-applied-configuration]
ISSUE TYPE

Feature Pull Request

COMPONENT NAME
hidden_fields
This replaces #643 as I no longer have permissions to push to branches in this repo

Reviewed-by: Bikouo Aubin

plugins/modules/k8s.py

@@ -188,7 +188,8 @@ options:
     description:
       - Hide fields matching this option in the result
       - An example might be C(hidden_fields=[metadata.managedFields])
-      - Only field definitions that don't reference list items are supported (so V(spec.containers[0]) would not work)
+        or V(hidden_fields=[spec.containers[0].env[3].value])
+        or V(hidden_fields=[metadata.annotations[kubectl.kubernetes.io/last-applied-configuration]])
     type: list
     elements: str
     version_added: 3.0.0

plugins/modules/k8s_info.py

@@ -48,7 +48,8 @@ options:
     description:
       - Hide fields matching any of the field definitions in the result
       - An example might be C(hidden_fields=[metadata.managedFields])
-      - Only field definitions that don't reference list items are supported (so V(spec.containers[0]) would not work)
+        or V(hidden_fields=[spec.containers[0].env[3].value])
+        or V(hidden_fields=[metadata.annotations[kubectl.kubernetes.io/last-applied-configuration]])
     type: list
     elements: str
     version_added: 3.0.0