Add @rghetia to code owners (#580)

Paulo Janotti · songy23 · commit 610d5f6b2ed7 · 2019-06-17T09:57:48.000-07:00
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
@@ -2,5 +2,5 @@
 # This file controls who is tagged for review for any given pull request.
 
 # For anything not explicitly taken by someone else:
-*               @census-instrumentation/global-owners @pjanotti @songy23 @tigrannajaryan 
+*               @census-instrumentation/global-owners @pjanotti @songy23 @tigrannajaryan @rghetia
 
