fix(citest): Run hal deploy apply in a login shell (#3353)
fix(citest): Run hal deploy apply in a login shell (#3353)

Ubuntu 18.04 on GCE installs gcloud using snap, so it ends up in
the /snap/bin directory. This directory is added to the path for
login shells, but not for non-login shells. Let's run hal deploy
apply in a login shell to prevent issues like this.
duftler/spinnaker,duftler/spinnaker,spinnaker/spinnaker,ewiseblatt/spinnaker,skim1420/spinnaker,spinnaker/spinnaker,skim1420/spinnaker,duftler/spinnaker,duftler/spinnaker,skim1420/spinnaker,spinnaker/spinnaker,ewiseblatt/spinnaker,ewiseblatt/spinnaker,spinnaker/spinnaker,ewiseblatt/spinnaker,skim1420/spinnaker