Fix broken fail_json in zuul_console

There was an occurrence to fail_json where the message was put in via
a positional argument instead of the msg keyword.

Change-Id: Ie4b9935869fab01e598fd7f34a5245515152c09b

zuul/ansible/library/zuul_console.py

@@ -277,7 +277,7 @@ def main():
         inode = get_inode()
         if not inode:
             module.fail_json(
-                "Could not find inode for port",
+                msg="Could not find inode for port",
                 exceptions=[])
 
         pid, exceptions = get_pid_from_inode(inode)