[stable-2.9] openssl_privatekey test - Add pause for macOS (#71819)

The stat time granularity on macOS is one second. We recently upgrade
to faster macOS hosts, so some tests that run closely together to
see if something changed will have the same timestamp intermittently.

test/integration/targets/openssl_privatekey/tasks/impl.yml

@@ -266,6 +266,12 @@
     select_crypto_backend: '{{ select_crypto_backend }}'
   register: privatekey_mode_2
 
+# stat time granularity on macOS is only one second
+- name: Pause
+  pause:
+    seconds: 1
+  when: ansible_facts.distribution == 'MacOSX'
+
 - name: Generate privatekey_mode (mode 0400, force)
   openssl_privatekey:
     path: '{{ output_dir }}/privatekey_mode.pem'