ipagroup: Fix test for externalmember use in client context

The test has been changed with the management fix for AD objects. The
conditional was lacking brackets and therefore did not properly work.
The brackets have been added.

Related: https://issues.redhat.com/browse/RHEL-70023

plugins/modules/ipagroup.py

@@ -581,8 +581,8 @@ def main():
                 "https://pagure.io/freeipa/issue/9349")
 
     if (
-        externalmember is not None
-        or idoverrideuser is not None
+        (externalmember is not None
+         or idoverrideuser is not None)
         and context == "client"
     ):
         ansible_module.fail_json(