Kraken: allow installing extension if pull fails but image is availab… #2866

Job	Run time
python-tests	3m 4s
frontend-tests	2m 12s
deploy-docker-images (bootstrap, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	3m 33s
deploy-docker-images (core, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	9m 48s
deploy-raspberry-image	0s
	18m 37s

Provide feedback