owners: add pruan-rht and liangxia

[liangxia]

Add @pruan-rht and @liangxia to OWNERS

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: liangxia
Once this PR has been reviewed and has the lgtm label, please assign smg247 for approval. For more information see the Kubernetes Code Review Process.

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Needs approval from an approver in each of these files:

• OWNERS

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[openshift-ci-robot]

/test remaining-required

[openshift-ci]

@liangxia: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/security	4c29471	link	false	/test security
ci/prow/e2e	4c29471	link	true	/test e2e
ci/prow/breaking-changes	4c29471	link	false	/test breaking-changes

Full PR test history. Your PR dashboard.

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