Handle istio gateways and virtual services in live cluster #2587

Job	Run time
build_package	26s
fw-rules-assertion-tests	42s
calico-tests-orig-vs-opt-comparison	50s
calico-tests	1m 58s
istio-tests	1m 10s
istio-tests-orig-vs-opt-comparison	1m 10s
k8s-tests	1m 33s
k8s-tests-orig-vs-opt-comparison	2m 5s
lint	11s
test-docker	34s
test-docker-ubi	57s
unit-tests	8s
test_package	10s
	11m 54s

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