Merge branch 'improve_k8s_jobs' into 'master'

Improve and fix k8s jobs

See merge request !496
5 jobs for istio_upgrade in 53 seconds (queued for 6 seconds)
Status Name Job ID Coverage
  Validate
passed go_lint #648004

00:00:07

passed tf_lint #648003

00:00:08

 
  Test
passed unit_test #648005

00:00:16

 
  Build
passed Build #648006
docker-runner

00:00:09

 
  Scan
passed container_scanning #648007

00:00:18