title: helm install "unknown flag: --output"
body: <p><code>helm install myChart-0.0.1.tgz --output json</code> results in <code>Error: unknown flag: --output</code></p>
  
  <p>I use helm version <code>v2.14.3</code>. According to the docs <a href="https://helm.sh/docs/helm/#helm-install" rel="nofollow noreferrer">https://helm.sh/docs/helm/#helm-install</a> this should work. Other flags seem to work fine. E.g. <code>helm install myChart-0.0.1.tgz --namespace test-ns --set random.variable="debug" --name mychart</code></p>
  
  <p>The documentation also states the schema <code>helm install [CHART] [flags]</code>,
  while its examples suggest the schema <code>helm install [flags] [CHART]</code> in my tests both seem to work but non accepts the output flag.</p>