Fix various CI failures in 4.3 for changing environment #30889

	name: test replay

	on: [push, pull_request, workflow_dispatch]
	# paths:
	# - "*"
	# - "!README.md" <-- don't rebuild on doc change
	concurrency:
	group: ci-${{github.workflow}}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-20.04
	container: ardupilot/ardupilot-dev-${{ matrix.toolchain }}:latest
	strategy:
	fail-fast: false # don't cancel if a job from the matrix fails
	matrix:
	toolchain: [
	base, # GCC
	clang,
	]
	config: [
	replay
	]
	steps:
	# git checkout the PR
	- uses: actions/checkout@v2
	with:
	submodules: 'recursive'
	# Put ccache into github cache for faster build
	- name: Prepare ccache timestamp
	id: ccache_cache_timestamp
	run: \|
	NOW=$(date -u +"%F-%T")
	echo "::set-output name=timestamp::${NOW}"
	- name: ccache cache files
	uses: actions/cache@v2
	with:
	path: ~/.ccache
	key: ${{github.workflow}}-ccache-${{ matrix.toolchain }}-${{steps.ccache_cache_timestamp.outputs.timestamp}}
	restore-keys: ${{github.workflow}}-ccache-${{ matrix.toolchain }}- # restore ccache from either previous build on this branch or on master
	- name: setup ccache
	run: \|
	. .github/workflows/ccache.env
	- name: test ${{matrix.config}} ${{ matrix.toolchain }}
	env:
	CI_BUILD_TARGET: ${{matrix.config}}
	shell: bash
	run: \|
	if [[ ${{ matrix.toolchain }} == "clang" ]]; then
	export CC=clang
	export CXX=clang++
	fi
	PATH="/github/home/.local/bin:$PATH"
	Tools/scripts/build_ci.sh

	- name: Archive buildlog artifacts
	uses: actions/upload-artifact@v2
	if: failure()
	with:
	name: fail-${{ matrix.toolchain }}-${{matrix.config}}
	path: /tmp/buildlogs
	retention-days: 14

Provide feedback