ci: Add owners file to work with bot

[travisn]

Description of your changes:
The OWNERS file is needed to work with the bot used by the downstream integration for approvals and lgtm.

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide).
• Skip Tests for Docs: If this is only a documentation change, add the label skip-ci on the PR.
• Reviewed the developer guide on Submitting a Pull Request
• Pending release notes updated with breaking and/or notable changes for the next minor release.
• Documentation has been updated, if necessary.
• Unit tests have been added, if necessary.
• Integration tests have been added, if necessary.

[openshift-ci]

@travisn: No Bugzilla bug is referenced in the title of this pull request.
To reference a bug, add 'Bug XXX:' to the title of this pull request and request another bug refresh with /bugzilla refresh.

In response to this:

ci: Add owners file to work with bot

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: travisn

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

Needs approval from an approver in each of these files:

• OWNERS

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