[SDK] Fix empty list for env variables and numpy version (#2360) #1386

Job	Run time
Publish Image (file-metrics-collector, cmd/metricscollector/v1beta1/file-metricscollector/Dockerf... / Publish Image	7m 19s
Publish Image (katib-controller, cmd/katib-controller/v1beta1/Dockerfile) / Publish Image	14m 8s
Publish Image (katib-db-manager, cmd/db-manager/v1beta1/Dockerfile) / Publish Image	7m 11s
Publish Image (katib-ui, cmd/ui/v1beta1/Dockerfile) / Publish Image	45m 9s
Publish Image (tfevent-metrics-collector, cmd/metricscollector/v1beta1/tfevent-metricscollector/D... / Publish Image	6m 35s
	1h 20m 22s

Provide feedback