Tests

Merge pull request #253 from weaviate/grpc/update-multi-vec-to-match-… #581

Job	Run time
tests / Integration (auth_enabled)	5m 9s
tests / Unit tests	2m 56s
tests / Integration (auth_disabled)	5m 5s
tests / Auth integration tests	2m 21s
tests / tests-deprecated	1m 36s
	17m 7s

Provide feedback