flake8: fix 'error E275 missing whitespace after keyword'

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit 7ce972e)
(cherry picked from commit 82dc265)

Author: guits

module_utils/ca_common.py

@@ -110,4 +110,4 @@ def fatal(message, module):
     if module:
         module.fail_json(msg=message, rc=1)
     else:
-        raise(Exception(message))
+        raise Exception(message)