Update GHA ubuntu image to include python 2.7 #1210

	name: "Lint and Unit Tests"

	on:
	push:
	branches: [main, ]
	pull_request:
	# The branches below must be a subset of the branches above
	branches: [main]

	jobs:
	build:
	name: ${{ matrix.travis_job }}
	runs-on: ubuntu-20.04
	services:
	postgres:
	image: postgres:10.8
	env:
	POSTGRES_USER: testuser
	POSTGRES_PASSWORD: testpassword
	POSTGRES_DB: test_django
	ports:
	- 5432:5432
	# needed because the postgres container does not provide a healthcheck
	options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
	strategy:
	matrix:
	python-version: [2.7]
	travis_job: ["lint", "test"]
	env:
	DJANGO_SETTINGS_MODULE: esp.settings

	steps:
	- uses: actions/checkout@v2
	- uses: niden/actions-memcached@v7
	- name: Set up Python ${{ matrix.python-version }}
	uses: MatteoH2O1999/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Prepare for Installing Dependencies
	run: deploy/travis/before_install
	- name: Install Dependencies for ${{ matrix.travis_job }}
	env:
	TRAVIS_JOB: ${{ matrix.travis_job }}
	run: deploy/travis/install
	- name: Prepare for ${{ matrix.travis_job }}
	env:
	TRAVIS_JOB: ${{ matrix.travis_job }}
	run: deploy/travis/before_script
	- name: Run ${{ matrix.travis_job }}
	env:
	TRAVIS_JOB: ${{ matrix.travis_job }}
	run: deploy/travis/script
	- name: Upload Coverage to Codecov
	if: ${{ matrix.travis_job == 'test' }}
	uses: codecov/codecov-action@v2
	with:
	fail_ci_if_error: true
	verbose: true

Provide feedback