Change che-machine-exec according to fast cloud-shell integration(server part)

[AndrienkoAleksandr]

Referenced issue:

eclipse-che/che#15434

Proposed changes

Change che-machine-exec according to fast cloud-shell integration:

• we get workspace ID from the env variable;
• we have an optional flag to serve static resources. Using this flag che-machine-exec could provide some frontend part.
• If client side doesn't set in the request machineName for exec creation - we try to create exec to the first available container in the che workspace pod.

Signed-off-by: Oleksandr Andriienko oandriie@redhat.com

[nickboldt]

Do we need to also apply something in rhel.Dockerfile? 78d10e9#diff-3254677a7917c6c01f55212f86c57fbfR48 for example?

[AndrienkoAleksandr]

Do we need to also apply something in rhel.Dockerfile?

It can be useful if we want to provide cloud shell editor for crw.