Properly convert unix time into meta time

[pingsutw]

Why are these changes needed?

Failed to convert Unix time to meta time.

2022-08-16T10:29:43.043Z	DEBUG	controllers.RayJob	RayJob information	{"RayJob": "rayjob-sample", "jobInfo": {"status":"SUCCEEDED","entrypoint":"python /home/ray/samples/sample_code.py","message":"Job finished successfully.","start_time":1660645691607,"end_time":1660645710418}, "rayJobInstance": "PENDING"}
2022-08-16T10:29:43.043Z	INFO	controllers.RayJob	Update status from PENDING to SUCCEEDED	{"rayjob": "rayjob-sample-z7j5q"}
2022-08-16T10:29:43.043Z	INFO	controllers.RayJob	UpdateState	{"oldJobStatus": "PENDING", "newJobStatus": "SUCCEEDED", "oldJobDeploymentStatus": "Running", "newJobDeploymentStatus": "Running"}
2022-08-16T10:29:43.057Z	ERROR	controller.rayjob	Reconciler error	{"reconciler group": "ray.io", "reconciler kind": "RayJob", "name": "rayjob-sample", "namespace": "default", "error": "combined error: <nil> RayJob.ray.io \"rayjob-sample\" is invalid: [status.startTime: Invalid value: \"54593-10-07T05:53:27Z\": status.startTime in body must be of type date-time: \"54593-10-07T05:53:27Z\", status.endTime: Invalid value: \"54593-10-07T11:06:58Z\": status.endTime in body must be of type date-time: \"54593-10-07T11:06:58Z\"]", "errorVerbose": "combined error: <nil> RayJob.ray.io \"rayjob-sample\" is invalid: [status.startTime: Invalid value: \"54593-10-07T05:53:27Z\": status.startTime in body must be of type date-time: \"54593-10-07T05:53:27Z\", status.endTime: Invalid value: \"54593-10-07T11:06:58Z\": status.endTime in body must be of type date-time: \"54593-10-07T11:06:58Z\"]\ngithub.com/ray-project/kuberay/ray-operator/controllers/ray.(*RayJobReconciler).updateState\n\t/workspace/controllers/ray/rayjob_controller.go:311\ngithub.com/ray-project/kuberay/ray-operator/controllers/ray.(*RayJobReconciler).Reconcile\n\t/workspace/controllers/ray/rayjob_controller.go:181\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:114\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:311\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:266\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:227\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1581"}
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
	/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:266
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
	/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.11.1/pkg/internal/controller/controller.go:227

We should divide Unix time by 1000 because Ray job info returns the start_time in ms format.
https://docs.ray.io/en/latest/cluster/jobs-package-ref.html#jobinfo

Related issue number

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • This PR is not tested :(

[Jeffwan]

Thanks for the improvement!

[Jeffwan]

@pingsutw Do you rebase remote/master to your HEAD. the last test case doesn't go through, It's definitely not the issue of your code. I am just curious if there's any release blocker problem.

[pingsutw]

Merged master to this branch. Hope the tests will pass.