Merge branch '49139-sleep-before-installing-tiller-to-prevent-race-condition' into 'master'

Resolve "Installing helm tiller sometimes fails with no api token found"

Closes #49139

See merge request gitlab-org/gitlab-ce!20580

qa/qa/factory/resource/kubernetes_cluster.rb

@@ -36,6 +36,9 @@ module QA
 
           if @install_helm_tiller
             Page::Project::Operations::Kubernetes::Show.perform do |page|
+              # We must wait a few seconds for permissions to be setup correctly for new cluster
+              sleep 10
+
               # Helm must be installed before everything else
               page.install!(:helm)
               page.await_installed(:helm)