Improve error message for pod disruption budget when draining a node (#798)

SUMMARY
Closes #797 .
The error message "Too Many Requests" is confusing and is changed to a more meaningful message:
TASK [Drain node] *************************************************************************
Montag 25 November 2024  09:20:28 +0100 (0:00:00.014)       0:00:00.014 ******* 
fatal: [host -> localhost]: FAILED! => {"changed": false, "msg": "Failed to delete pod kube-public/draintest-6b84677b99-9jf7m due to: Cannot evict pod as it would violate the pod's disruption budget."}


The new task output would allow to deal with a pod disruption budget with the retries/until logic in a more controlled way:
---
- hosts: "{{ target }}"
  serial: 1
  gather_facts: false
  tasks:
    - name: Drain node
      kubernetes.core.k8s_drain:
        kubeconfig: "{{ kubeconfig_path }}"
        name: "{{ inventory_hostname }}"
        delete_options:
          ignore_daemonsets: true
          delete_emptydir_data: true
          wait_timeout: 100
          disable_eviction: false
          wait_sleep: 1
      delegate_to: localhost
      retries: 10
      delay: 5
      until: drain_result is success or 'disruption budget' not in drain_result.msg
      register: drain_result

ISSUE TYPE


Feature Pull Request

COMPONENT NAME
k8s_drain

Reviewed-by: Mike Graves <mgraves@redhat.com>

changelogs/fragments/798-drain-pdb-error-message.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+  - k8s_drain - Improve error message for pod disruption budget when draining a node (https://github.com/ansible-collections/kubernetes.core/issues/797).