Merge pull request kubernetes-sigs#2535 from mdzraf/ownersFileUpdate

Add mdzraf to OWNERS file

Author: k8s-ci-robot

OWNERS

@@ -6,6 +6,7 @@ approvers:
 - gnufied
 - jsafrane
 - leakingtapan
+- mdzraf
 - rdpsin
 - torredil
 - wongma7
@@ -17,4 +18,5 @@ reviewers:
 - AndrewSirenko
 - ConnorJC3
 - ElijahQuinones
+- mdzraf
 - torredil