* Make CLUSTER_DIR relative
* Fix ansible inventory location
* Fix kubeconfig download location

Fixes: #937

document upgrade procedure (untested) and undo change of prometheus-basic-auth file because it was incorrect

Fixes: #813

Prometheus ingress is enabled by default now

TRIGGER_JOBS=ci-test-image-build

Fixes: #725

Fixes: #713

add and use --behave-ignore-certificate-errors flag to prevent chrome from complaining about staging certs