[ws-manager-mk2] Add node utilization metrics

[WVerlaek]

Description

Adds node utilization metrics, reporting per node how much cpu/memory is requested by workspaces (using the resource request values of their workspace class).

Summary generated by Copilot

🤖[deprecated] Generated by Copilot at 04b9fbb

Added a new metric to measure workspace resource requests per node. This metric, workspaceNodeUtilization, is collected and exposed by the ws-manager-mk2 controller using a custom type nodeUtilizationVec. This can help monitor and optimize the node allocation and utilization of workspaces.

Related Issue(s)

Part of ENG-1071

How to test

Tested in a preview env

Documentation

Preview status

gitpod:summary

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• /werft preemptible
  Saves cost. Untick this only if you're really sure you need a non-preemtible machine.
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[mads-hartmann]

Got a walkthrough by @WVerlaek. LGTM