change alertmanager-svc-headless from http to grpc port + expose 9094 TCP and UDP #1493

	name: Lint and Test Charts

	on:
	pull_request:

	jobs:
	lint-test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Set up Helm
	uses: azure/setup-helm@v3
	with:
	version: v3.4.1

	# Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
	# yamllint (https://github.com/adrienverge/yamllint) which require Python
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.7

	- name: Set up chart-testing
	uses: helm/[email protected]
	with:
	version: v3.4.0

	- name: Run chart-testing (lint)
	run: ct lint --config ct.yaml

	- name: Updated README.md
	run: \|
	make README.md
	git diff --exit-code -- README.md

	- name: Create kind cluster
	uses: helm/[email protected]

	- name: Run chart-testing (install)
	run: \|
	kubectl create namespace cortex
	ct install --config ct.yaml --namespace cortex

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