Accept numeric user and group parameters

lib/ansible/module_common.py

@@ -368,6 +368,9 @@ class AnsibleModule(object):
             return changed
         user, group = self.user_and_group(path)
         if owner != user:
+            try:
+                uid = int(owner)
+            except ValueError:
                 try:
                     uid = pwd.getpwnam(owner).pw_uid
                 except KeyError:
@@ -389,6 +392,9 @@ class AnsibleModule(object):
         if old_group != group:
             if self.check_mode:
                 return True
+            try:
+                gid = int(group)
+            except ValueError:
                 try:
                     gid = grp.getgrnam(group).gr_gid
                 except KeyError: