title: gcloud components update permission denied
body: <p>All of a sudden I started getting "Permission Denied" issues when trying to run any gcloud commands such as <code>gcloud components update</code> -- the issue was avoided if I ran <code>sudo gcloud components update</code> but it's not clear to my why the sudo command is suddenly required? I have actually been trying to run a GCMLE experiment and it had the same error/warning, so I tried updating components and still ran into this issue. I have been travelling for a couple days and did not make any changes since these same commands worked a few days ago. Further, I did not changed my OS (Mac High Sierra 10.13.3) -- were there any changes on the Google side that might explain this change in behavior? What is the best course of action to permanently get around this warning?</p>
  
  <pre><code>(conda-env) MacBook-Pro:user$ gcloud components update
  WARNING: Could not setup log file in /Users/$USERNAME/.config/gcloud/logs, (IOError: [Errno 13] Permission denied: u'/Users/$USERNAME/.config/gcloud/logs/2018.03.10/XX.XX.XX.XXXXXX.log')
  </code></pre>
  
  <p>after <code>sudo gcloud components update</code> I was able to kick off a GCMLE experiment, but I also get the same warning (though my job now submits successfully).</p>
  
  <pre><code>WARNING: Could not setup log file in /Users/#USERNAME/.config/gcloud/logs, (IOError: [Errno 13] Permission denied: u'/Users/$USERNAME/.config/gcloud/logs/2018.03.10/XX.XX.XX.XXXXXX.log')
  </code></pre>