Added RayJobSubmission Client wrapper for RCS not created by CodeFlare

[Bobbins228]

Issue link

Closes: #410

What changes have been made

Added the RayJobClient object for use of RayJobSubmission related commands with the SDK.
This allows us to leverage the SDK to submit jobs to Ray Clusters that were either not created by the SDK or are in a non Kubernetes environment.

Verification steps

1. Create a Ray Cluster - (I recommend the mnist example RC)
2. Run this example job submission

from codeflare_sdk.job.ray_jobs import RayJobClient

client = RayJobClient(
    address="<RAY_DASHBOARD_ADDRESS>"
)

job_id = client.submit_job(
    entrypoint="python mnist.py",
    runtime_env={"working_dir": "./","pip": "requirements.txt"},
)

client.get_job_status(job_id)

3. Check the dashboard for the new job which should be running.
4. Try out the other commands listed below

client.get_job_info(job_id)
client.get_job_status(job_id)
client.stop_job(job_id)
client.delete_job(job_id)
client.address()

# tail_job_logs returns an Iterator so we must iterate through it and print each line
async for lines in client.tail_job_logs(job_id):
    print(lines, end="") 

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[ChristianZaccaria]

Great job Mark! I left a few requested changes below. Apart from those, I noticed there are some functions that are not unit tested, is there a reason for that? Just thinking about code coverage.

[ChristianZaccaria]

/lgtm thanks!

[KPostOffice]

Thanks for the changes. Just some styling and docs nitpicks

[Bobbins228]

@KPostOffice Added in the param descriptions from the ray docs and Changed the list_jobs return type to List[JobDetails]

[KPostOffice]

Thanks for addressing the comments

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ChristianZaccaria, KPostOffice

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