Add additional KubeRay autoscaler e2e tests #7321

Job	Run time
Build Apiserver and Docker Images	3m 39s
Build security proxy Binaries and Docker Images	1m 37s
Lint (pre-commit)	3m 5s
Build Ray Kubectl plugin	3m 2s
Python Client Test	1m 18s
Build Operator Binaries and Docker Images	6m 28s
Compatibility Test - 2.7.0	15m 38s
Compatibility Test - 2.9.0	15m 49s
Compatibility Test - 2.8.0	12m 3s
Compatibility Test - Nightly	15m 42s
	1h 18m 21s

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