Tools: don't reinstall packages already in base image #2928

Job	Run time
python-tests	3m 25s
frontend-tests	2m 13s
deploy-docker-images (bootstrap, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	2m 45s
deploy-docker-images (core, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	8m 56s
deploy-raspberry-image	0s
	17m 19s

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