EC_K8S_NAMESPACE needs checks

[gilesknap]

This env variable decides which cluster namespace you are deploying to. If blank it deploys to local docker/podman.

The issue is that this happens silently and there is no check that you are doing the right thing.

Solution:

• make beamline values.yaml contain a namespace value
• verify that we are deploying to the namespace specified there
• error if not (perhaps allow a forced overrride?)

[gilesknap]

Also suggested by other team members:

• have an ec function that reports the current beamline config
• set an environment variable for possible inclusion in your prompt

[gilesknap]

fixed in f4e0fc03bf197e43

we now have ec env and EC_K8S_NAMESPACE=local or = K8s namespace