Add "antctl get bgproutes" agent command (#6734) #33786

Job	Run time
Check whether tests need to be run based on diff	19s
Build Flow Aggregator image to be used for Kind e2e tests	2m 28s
Build Antrea image to be used for Kind e2e tests	3m 40s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	44m 45s
E2e tests on a Kind cluster on Linux with all features enabled	55m 31s
Test installation using 'antctl check' command	4m 39s
API compatible with client version N-1	9m 8s
API compatible with client version N-2	8m 52s
E2e tests on a Kind cluster on Linux	43m 8s
E2e tests on a Kind cluster on Linux for Flow Visibility	27m 45s
E2e tests on a Kind cluster on Linux (hybrid)	37m 9s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 11s
E2e tests on a Kind cluster on Linux (noEncap)	35m 51s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 21s
Upgrade from Antrea version N-1	9m 13s
Validate metrics in Prometheus document match running deployment's	2m 23s
Upgrade from Antrea version N-2	9m 40s
Delete uploaded images	5s
	5h 6m 8s

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