Add GPU to ClusterConfiguration

[oksanabaza]

Issue link

https://issues.redhat.com/browse/RHOAIENG-6666

What changes have been made

Add GPU to ClusterConfiguration

Verification steps

Checks

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

[Bobbins228]

Can we group the gpus together like this for all notebooks:

head_gpus=1 # For GPU enabled workloads set the head_gpus and num_gpus
num_gpus=1

Also the cluster_job_client demos would need to be updated like this too. Thanks

[Fiona-Waters]

/lgtm

[KPostOffice]

/approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Bobbins228, KPostOffice

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