title: Specifying K8s namesapce for Gitlab runner
body: <p>I have a Gitlab runner using a K8s executor. But when running the pipeline I am getting below error</p>
  
  <pre><code>Checking for jobs... received                       job=552009999 
  repo_url=https://gitlab.com/deadbug/rns.git runner=ZuT1t3BJ
  WARNING: Namespace is empty, therefore assuming 'default'.  job=552009999 project=18763260 
  runner=ThT1t3BJ
  ERROR: Job failed (system failure): secrets is forbidden: User "deadbug" cannot create resource 
  "secrets" in API group "" in the namespace "default"  duration=548.0062ms job=552009999 
  </code></pre>
  
  <p>From the error message, I undestand the namespace needs to be updated. I specified namespace in the Gitlab variables</p>
  
  <p><a href="https://i.stack.imgur.com/VCRua.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VCRua.png" alt="enter image description here"></a></p>
  
  <p>But after this also, pipeline is failing with the above error message. How do I change the namespace for the runner ?</p>