Test

feat: add job to expose extensions #346

Job	Run time
check-flavor	8s
validate (install, upstream) / run	1m 20s
validate (install, registry1) / run	1m 10s
validate (upgrade, registry1) / run	1m 20s
validate (install, unicorn) / run	1m 21s
validate (upgrade, unicorn) / run	1m 9s
validate (upgrade, upstream) / run	1m 11s
	7m 39s

Provide feedback