Add BGP confederation support in BGPPolicy #34453

Job	Run time
Check whether tests need to be run based on diff	22s
Build Antrea image to be used for Kind e2e tests	3m 40s
Build Flow Aggregator image to be used for Kind e2e tests	2m 23s
E2e tests on a Kind cluster on Linux	45m 48s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	46m 40s
E2e tests on a Kind cluster on Linux with all features enabled	59m 9s
E2e tests on a Kind cluster on Linux (hybrid)	38m 14s
E2e tests on a Kind cluster on Linux for Flow Visibility	25m 41s
E2e tests on a Kind cluster on Linux (noEncap)	36m 30s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 14s
Test installation using 'antctl check' command	4m 23s
API compatible with client version N-2	8m 48s
API compatible with client version N-1	9m 8s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 14s
Upgrade from Antrea version N-1	9m 21s
Upgrade from Antrea version N-2	9m 27s
Validate metrics in Prometheus document match running deployment's	1m 49s
Delete uploaded images	4s
	5h 12m 55s

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