Add new hook to filter invalid scales based on features set in the config file #264

	# documentation: https://help.github.com/en/articles/workflow-syntax-for-github-actions
	name: Test installation of EESSI test suite with 'pip install'
	on: [push, pull_request, workflow_dispatch]
	permissions: read-all
	jobs:
	test_pip_install:
	# ubuntu <= 20.04 is required for python 3.6
	runs-on: ubuntu-20.04
	strategy:
	fail-fast: false
	matrix:
	python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
	steps:
	- name: Check out repository
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
	with:
	persist-credentials: false

	- name: Set up Python
	uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install setuptools
	run: \|
	if [[ "${{ matrix.python-version }}" == "3.6" ]]; then
	# system installed setuptools version in RHEL8 and CO7
	python -m pip install --user setuptools==39.2.0
	fi

	- name: Install ReFrame
	run: \|
	python -m pip install --user ReFrame-HPC

	- name: Install EESSI test suite with 'pip install'
	run: \|
	# install from source distribution tarball, to test release as published on PyPI
	rm -rf dist
	python setup.py sdist
	ls dist

	python -m pip install --user dist/eessi*.tar.gz
	find $HOME/.local

	# make sure we are not in the source directory
	cd $HOME

	python --version
	python -m pip --version
	python -c 'import setuptools; print("setuptools", setuptools.__version__)'

	python -c 'import eessi.testsuite.utils'
	python -c 'import eessi.testsuite.tests.apps'

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