[Sync::Consent] Add vitaliii@ to components/consent_auditor/OWNERS.

Change-Id: I82c9e136952dbc13c3ac6452300100f4d5645bef
Reviewed-on: https://chromium-review.googlesource.com/1149877Reviewed-by: Markus Heintz <markusheintz@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577835}

components/consent_auditor/OWNERS

 dullweber@chromium.org
 markusheintz@chromium.org
 msramek@chromium.org
+vitaliii@chromium.org
 
 # COMPONENT: Privacy