Prevent k8s images from sending telemetry
Although tests running in buildkite images will not send telemetry since the
BUILDKITE env variable is implicitly set, the integration tests running in the
k8s images will still send telemetry since the env variable will not be
set in these pulled images.
Although we have found the offending repositories that are logged via telemetry,
we should prevent these logs from occurring in the first place.
Test Plan: 🙏
Reviewed By: nate
Differential Revision: https://dagster.phacility.com/D5131