add var for arch and warn if arch mismatch #589

	# This workflow move the right instance tf files from template directory depending on topology choice

	name: TFTopologyCI

	# Controls when the workflow will run
	on:
	# Triggers the workflow on push or pull request events but only for the "main" or "master" branch
	push:
	branches: [ "main", "master" ]
	pull_request:
	branches: [ "main", "master" ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v3
	with:
	persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
	fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
	# Runs a set of commands using the runners shell
	- name: updating instance-xxx.tf files in terraform directory to match topology file
	env: #use topology varaible as env
	TOPOLOGY: ${{ vars.TOPOLOGY }}
	run: \|
	echo Running tftopology.sh
	./helpers/tftopology.sh
	- name: Commit & Push changes back to repo
	uses: actions-js/push@master
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	branch: main
	message: "ATTENTION: Topo update, discard previous run, check TF plan"

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