Fix permission assignment on rendered registry auth files

- This file shouldnt need the executable bit
- Should have been setting permissions before writing any data
- No need to close the file since we're using open w/ a context manager

awx/main/tasks.py

@@ -878,14 +878,14 @@ class BaseTask(object):
             if cred.has_inputs(field_names=('host', 'username', 'password')):
                 path = os.path.split(private_data_dir)[0]
                 with open(path + '/auth.json', 'w') as authfile:
+                    os.chmod(authfile.name, stat.S_IRUSR | stat.S_IWUSR)
+
                     host = cred.get_input('host')
                     username = cred.get_input('username')
                     password = cred.get_input('password')
                     token = "{}:{}".format(username, password)
                     auth_data = {'auths': {host: {'auth': b64encode(token.encode('ascii')).decode()}}}
                     authfile.write(json.dumps(auth_data, indent=4))
-                authfile.close()
-                os.chmod(authfile.name, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
                 params["container_options"].append(f'--authfile={authfile.name}')
             else:
                 raise RuntimeError('Please recheck that your host, username, and password fields are all filled.')