PyTorch Operator Prometheus Metrics

[krishnadurai]

• Implements all PyTorch Operator Prometheus Metrics
• Adds README for documentation

TODOs:

• Test
• Correct Documentation

/hold WIP

Implements: #174
Related: #160

cc: @johnugeorge

[k8s-ci-robot]

Hi @krishnadurai. Thanks for your PR.

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[coveralls]

Coverage remained the same at 85.217% when pulling c8a7259 on krishnadurai:feature/prometheus_integration into 6d689cb on kubeflow:master.

[johnugeorge]

/ok-to-test

[krishnadurai]

Ready for review.
@johnugeorge

[johnugeorge]

/lgtm

[johnugeorge]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge

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