Fix pylint warnings in ocw/lib/k8s.py #765

	---
	name: Lint

	'on': [push, pull_request]

	jobs:
	pylint:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.11"]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	pip install -r requirements_test.txt
	- name: Analysing the code with pylint
	run: \|
	pylint ./ocw/lib/*.py cleanup_k8s.py
	flake8-lint:
	runs-on: ubuntu-latest
	name: flake8
	steps:
	- name: Check out source repository
	uses: actions/checkout@v3
	- name: Set up Python environment
	uses: actions/setup-python@v4
	with:
	python-version: "3.11"
	- name: flake8 Lint
	uses: py-actions/flake8@v2
	with:
	max-line-length: "140"
	hadolint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: hadolint/[email protected]
	with:
	dockerfile: 'Dockerfile'
	- uses: hadolint/[email protected]
	with:
	dockerfile: 'Dockerfile_dev'
	- uses: hadolint/[email protected]
	with:
	dockerfile: 'Dockerfile_k8s'
	- uses: hadolint/[email protected]
	with:
	dockerfile: 'Dockerfile_k8s_dev'

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