[enhance] change default metrics collect format

[anencore94]

What this PR does / why we need it:

• to parse scientific notation well

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #1702

Checklist:

• Docs included if any changes are user facing

[andreyvelich]

Thank you for this update @anencore94!
Small comment from me.

[andreyvelich]

Also, please submit the PR to update documentation: https://www.kubeflow.org/docs/components/katib/experiment/#metrics-collector.
We add the default metrics format there.

[anencore94]

Also, please submit the PR to update documentation: https://www.kubeflow.org/docs/components/katib/experiment/#metrics-collector.
We add the default metrics format there.

Ok, Thanks for notifying :)

[johnugeorge]

/lgtm

[andreyvelich]

Thank you for your contribution @anencore94!
/lgtm
/approve

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andreyvelich, anencore94

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [andreyvelich]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment