chore(module): add network label with network name

[diafour]

Description

• Remove metric replacement rule to always set network label with "default" value
• Add kubevirt patch to set network name from annotation.

Why do we need it, and what problem does it solve?

Given this specs:

  networks:
  - type: Main
  - name: cn-1003-for-e2e-test
    type: ClusterNetwork
  - name: cn3
     type: ClusterNetwork

Before: only "default" network is shown:

After:

What is the expected result?

Graph contains separate lines for each network specified in the VM spec.

Checklist

• The code is covered by unit tests.
• e2e tests passed.
• Documentation updated according to the changes.
• Changes were tested in the Kubernetes cluster manually.

Changelog entries

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