Add Profiling feature to get debug data for modelmesh controller.

[Jooho]

Motivation

Modelmesh Controller has a memory leak issue(https://issues.redhat.com/browse/RHODS-8868) so it needs to gather heapdump. In order to get detailed data, net/http/pprof package should be added.

This change will deploy a webserver and it provides to download data but this web server requires authentication to download debugging data.

Modifications

Added pprof package.

Test

Add ENABLE_PPROF environmental variable in the odh-modelmesh-controller deployment.

oc port-forward pod/modelmesh-controller-XXXX  9999:9999
http://localhost:9999/debug/pprof/heap

Result

heap file will be downloaded.

PR checklist

Checklist items below are applicable for development targeted to both fast and stable branches/tags

• Unit tests pass locally
• FVT tests pass locally
• If the PR adds a new container image or updates the tag of an existing image (not build within cpaas), is the corresponding change made in live-builder and cpaas-midstream to add/update the image tag in the operator CSV? Link the PRs if applicable

Checklist items below are applicable for development targeted to both fast and stable branches/tags

• Tested modelmesh serving deployment with odh-manifests and ran odh-manifests-e2e tests locally

[Jooho]

/retest

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: israel-hdez, Jooho

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• OWNERS [Jooho,israel-hdez]

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