Upgrade base image of UBI to UBI9 #31565

Job	Run time
Check whether tests need to be run based on diff	30s
Build Flow Aggregator image to be used for Kind e2e tests	2m 55s
Build Antrea image to be used for Kind e2e tests	12m 17s
E2e tests on a Kind cluster on Linux with all features enabled	1h 0m 55s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	49m 43s
E2e tests on a Kind cluster on Linux	46m 59s
E2e tests on a Kind cluster on Linux (noEncap)	39m 31s
API compatible with client version N-1	8m 51s
API compatible with client version N-2	8m 41s
E2e tests on a Kind cluster on Linux for Flow Visibility	29m 5s
E2e tests on a Kind cluster on Linux (hybrid)	38m 49s
NetworkPolicy conformance tests on a Kind cluster on Linux	7m 58s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 10s
Upgrade from Antrea version N-1	9m 13s
Upgrade from Antrea version N-2	9m 9s
Validate metrics in Prometheus document match running deployment's	2m 6s
Delete uploaded images	4s
	5h 29m 56s

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