fix: configure pod name for resource monitor

[vitaliy-guliy]

What does this PR do?

To get the metrics, resource monitor extension needs to know the pod name, which is provided by HOSTNAME environment variable.

Sometimes VS Code overwrites the variable with different value ( it looks like it's not VS Code, but someone from dependencies ).

To avoid losing the pod name, it was decided to copy HOSTNAME env var to DEVWORKSPACE_POD_NAME env var before launching the editor, and take the pod name from new variable when necessary.

What issues does this PR fix?

https://issues.redhat.com/browse/CRW-3526

How to test this PR?

• create workspace with https://github.com/che-incubator/che-code/tree/fix-resource-monitor-test
• ensure resource monitor is working
• open a terminal, ensure DEVWORKSPACE_POD_NAME environment variable is set

[github-actions]

Click here to review and test in web IDE:

[github-actions]

Pull Request Dev image published:
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[github-actions]

Pull Request Dev image published:
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[github-actions]

Pull Request Dev image published:
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[github-actions]

Pull Request Che-Code image published:
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[github-actions]

Pull Request Dev image published:
👉 quay.io/che-incubator-pull-requests/che-code-dev:pr-291-dev-amd64

[github-actions]

Pull Request Dev image published:
👉 quay.io/che-incubator-pull-requests/che-code-dev:pr-291-dev-amd64

[github-actions]

Pull Request Che-Code image published:
👉 quay.io/che-incubator-pull-requests/che-code:pr-291-amd64

[svor]

LGTM

[devstudio-release]

Build 3.11 :: code_3.x/975: Console, Changes, Git Data

[devstudio-release]

Build 3.11 :: sync-to-downstream_3.x/5222: Console, Changes, Git Data

[devstudio-release]

Build 3.11 :: get-sources-rhpkg-container-build_3.x/5100: Console, Changes, Git Data

[devstudio-release]

Build 3.11 :: push-latest-container-to-quay_3.x/3637: Console, Changes, Git Data

[devstudio-release]

Build 3.11 :: get-sources-rhpkg-container-build_3.x/5100:

code : 3.x :: Build 56885043 : quay.io/devspaces/code-rhel8:3.11-7
SUCCESS; copied to quay; /DS_CI/push-latest-container-to-quay_3.x/3637 triggered

[devstudio-release]

Build 3.11 :: code_3.x/975:

Upstream sync done; /DS_CI/sync-to-downstream_3.x/5222 triggered

[devstudio-release]

Build 3.11 :: update-digests_3.x/4856: Console, Changes, Git Data