Fix test_lke_cluster_model_filter. Modify lke_cluster_instance fixtur… #234

Job	Run time
integration-tests	1h 5m 54s
process-upload-report	15s
apply-calico-rules	6s
add-fw-to-remaining-instances	17s
notify-slack	6s
integration-tests	1h 5m 30s
add-fw-to-remaining-instances	11s
process-upload-report	18s
apply-calico-rules	8s
notify-slack	4s
integration-tests	1h 2m 19s
process-upload-report	15s
add-fw-to-remaining-instances	18s
apply-calico-rules	10s
notify-slack	6s
	3h 15m 57s

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