update Go to 1.19; add tip-kubernetes for unit tests #660

	---
	name: "Unit Test"
	on:
	- push
	- pull_request
	jobs:
	test:
	strategy:
	matrix:
	go-version: [1.19.x]
	k8s_version: [1.19.2, 1.24.1, 1.27.1]
	os: [ubuntu-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- name: Install Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Test
	run: \|
	make test-setup-ci
	make test
	env:
	ENVTEST_K8S_VERSION: ${{ matrix.k8s_version }}

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