Add unit tests #1065

Job	Run time
thirdparties_sync	1m 28s
collect_kubernetes_versions	5s
test-extended-installation	5m 15s
test-default-installation (v1.23.1)	4m 4s
test-default-installation (v1.23.11)	4m 42s
test-default-installation (v1.23.17)	4m 43s
test-default-installation (v1.23.6)	4m 3s
test-default-installation (v1.24.11)	3m 50s
test-default-installation (v1.24.2)	4m 48s
test-default-installation (v1.25.2)	4m 29s
test-default-installation (v1.25.7)	4m 49s
test-default-installation (v1.26.11)	4m 8s
test-default-installation (v1.26.3)	9m 22s
test-default-installation (v1.26.4)	4m 25s
test-default-installation (v1.26.7)	4m 23s
test-default-installation (v1.27.1)	4m 29s
test-default-installation (v1.27.4)	4m 54s
test-default-installation (v1.27.8)	4m 55s
test-default-installation (v1.28.0)	4m 25s
test-default-installation (v1.28.3)	4m 59s
test-default-installation (v1.28.4)	3m 58s
	1h 32m 14s

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