podman_image: Use provided credentials when pulling image (#66372)

* Use credentials when pulling from a remote registry

changelogs/fragments/66372-podman-image-pull-credentials.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - podman_image - honor username and password options when pulling image from a remote registry

lib/ansible/modules/cloud/podman/podman_image.py

@@ -489,6 +489,10 @@ class PodmanImageManager(object):
         if self.auth_file:
             args.extend(['--authfile', self.auth_file])
 
+        if self.username and self.password:
+            cred_string = '{user}:{password}'.format(user=self.username, password=self.password)
+            args.extend(['--creds', cred_string])
+
         if self.validate_certs:
             args.append('--tls-verify')