Support step for int parameter in Chocolate and Hyperopt Suggestion

[andreyvelich]

Fixes: #1119.

I added parsing step in Internal Search Space function.
Default value for the int parameter step is 1.

/assign @gaocegege
/cc @StefanoFioravanzo

[k8s-ci-robot]

@andreyvelich: GitHub didn't allow me to request PR reviews from the following users: StefanoFioravanzo.

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In response to this:

Fixes: #1119.

I added parsing step in Internal Search Space function.
Default value for the int parameter step is 1.

/assign @gaocegege
/cc @StefanoFioravanzo

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[kubeflow-bot]

This change is 

[StefanoFioravanzo]

@andreyvelich I see that the bot does not allow me to be a reviewer. I understand that I should add myself to https://github.com/kubeflow/internal-acls? Maybe to devrel-team.members.txt? cc @jlewi

[andreyvelich]

@StefanoFioravanzo I believe you should be a Kubeflow member to left the review (https://github.com/kubeflow/internal-acls/blob/master/github-orgs/kubeflow/org.yaml#L23).
Right @jlewi ?

[jlewi]

Yes to LGTM PRs you will need to become a member of the org. To become a member of the org you should have made contributions that you can point to in the PR applying to join.

[gaocegege]

/lgtm
/approve
Thanks for your contribution! 🎉 👍

[k8s-ci-robot]

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