Fix default value of gpgcheck in doc (PR #36267)

lib/ansible/modules/packaging/os/yum_repository.py

@@ -124,7 +124,7 @@ options:
   gpgcheck:
     required: false
     choices: ['yes', 'no']
-    default: 'no'
+    default: null
     description:
       - Tells yum whether or not it should perform a GPG signature check on
         packages.

test/integration/targets/yum_repository/tasks/yum_repository_centos.yml

@@ -177,3 +177,24 @@
   yum_repository:
     name: listtest
     state: absent
+
+- name: disable epel (clean up)
+  yum_repository:
+    name: epel
+    state: absent
+
+- name: add epel
+  yum_repository:
+    name: epel
+    description: EPEL yum repo
+    baseurl: https://download.fedoraproject.org/pub/epel/{{ ansible_distribution_major_version }}/{{ ansible_architecture }}/
+    state: present
+    gpgcheck: no
+
+- set_fact:
+    repofile: "{{ lookup('file', '/etc/yum.repos.d/epel.repo') }}"
+
+- name: check for gpgcheck=0
+  assert:
+    that:
+      - "'gpgcheck = 0' in repofile"