yum always return changes dict, not only in check mode (#51987)

Previously the yum module would provide a `changes` dict when
executed in check mode but omit it when not in check mode in favor
of the `results` data which is raw output from the yum command. This
pull request makes that output uniform.

Fixes #51724

Signed-off-by: Adam Miller <admiller@redhat.com>

test/integration/targets/yum/tasks/check_mode_consistency.yml

@@ -0,0 +1,61 @@
+- name: install htop in check mode to verify changes dict returned
+  yum:
+    name: htop
+    state: present
+  check_mode: yes
+  register: yum_changes_check_mode_result
+
+- name: install verify changes dict returned in check mode
+  assert:
+    that:
+      - "yum_changes_check_mode_result is success"
+      - "yum_changes_check_mode_result is changed"
+      - "'changes' in yum_changes_check_mode_result"
+      - "'installed' in yum_changes_check_mode_result['changes']"
+      - "'htop' in yum_changes_check_mode_result['changes']['installed']"
+
+- name: install htop to verify changes dict returned
+  yum:
+    name: htop
+    state: present
+  register: yum_changes_result
+
+- name: install verify changes dict returned
+  assert:
+    that:
+      - "yum_changes_result is success"
+      - "yum_changes_result is changed"
+      - "'changes' in yum_changes_result"
+      - "'installed' in yum_changes_result['changes']"
+      - "'htop' in yum_changes_result['changes']['installed']"
+
+- name: remove htop in check mode to verify changes dict returned
+  yum:
+    name: htop
+    state: absent
+  check_mode: yes
+  register: yum_changes_check_mode_result
+
+- name: remove verify changes dict returned in check mode
+  assert:
+    that:
+      - "yum_changes_check_mode_result is success"
+      - "yum_changes_check_mode_result is changed"
+      - "'changes' in yum_changes_check_mode_result"
+      - "'removed' in yum_changes_check_mode_result['changes']"
+      - "'htop' in yum_changes_check_mode_result['changes']['removed']"
+
+- name: remove htop to verify changes dict returned
+  yum:
+    name: htop
+    state: absent
+  register: yum_changes_result
+
+- name: remove verify changes dict returned
+  assert:
+    that:
+      - "yum_changes_result is success"
+      - "yum_changes_result is changed"
+      - "'changes' in yum_changes_result"
+      - "'removed' in yum_changes_result['changes']"
+      - "'htop' in yum_changes_result['changes']['removed']"

test/integration/targets/yum/tasks/main.yml

@@ -71,3 +71,7 @@
     - (ansible_distribution in ['RedHat', 'CentOS', 'ScientificLinux'] and ansible_distribution_major_version|int > 6)
 
 - include: 'proxy.yml'
+
+- include: 'check_mode_consistency.yml'
+  when:
+    - (ansible_distribution in ['RedHat', 'CentOS', 'ScientificLinux'] and ansible_distribution_major_version|int == 7)