Review app deployment times out

Issue to track review app deployment failures where helm times out after 15 minutes. &6024 (comment 577832586)

Symptom: webservice not ready: #331207 (comment 577720090)

investigation: #331207 (comment 577774855)
cause: time out due to waiting for cluster to start new nodes (could be up to 15 minutes or even more)
fix: increase helm timeout + retry the deploy job