Update metrics.md - centralize the info in the discussion #2895

	name: Testdata verification

	on:
	push:
	pull_request:

	jobs:

	testdata:
	name: Verify testdata directory
	runs-on: ubuntu-latest
	# Pull requests from the same repository won't trigger this checks as they were already triggered by the push
	if: github.event_name == 'push' \|\| github.event.pull_request.head.repo.full_name != github.repository
	steps:
	- name: Clone the code
	uses: actions/checkout@v4
	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.22.3'
	- name: Remove pre-installed kustomize
	# This step is needed as the following one tries to remove
	# kustomize for each test but has no permission to do so
	run: sudo rm -f /usr/local/bin/kustomize
	- name: Verify testdata directory
	run: make check-testdata
	- name: Verify docs update
	run: make check-docs

Provide feedback