Enhance ExternalIPPool validation #30213

Job	Run time
Check whether tests need to be run based on diff	16s
Build Antrea image to be used for Kind e2e tests	19m 24s
Build Flow Aggregator image to be used for Kind e2e tests	3m 40s
API compatible with client version N-1	9m 24s
E2e tests on a Kind cluster on Linux	44m 58s
API compatible with client version N-2	9m 18s
E2e tests on a Kind cluster on Linux with all features enabled	57m 25s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	46m 57s
E2e tests on a Kind cluster on Linux for Flow Visibility	29m 1s
E2e tests on a Kind cluster on Linux (hybrid)	37m 28s
E2e tests on a Kind cluster on Linux (noEncap)	37m 21s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 34s
Upgrade from Antrea version N-1	9m 21s
Upgrade from Antrea version N-2	9m 23s
Validate metrics in Prometheus document match running deployment's	2m 11s
Delete uploaded images	4s
	5h 24m 45s

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