Temporarily make the media_item spec less restrictive
Temporarily make the media_item spec less restrictive

Temporarily let this have additional properties so that it doesn't start
alerting shortly after Parsoid sections are deployed but before we've had
a chance to update the spec.

Change-Id: I48ef2dda7ad84ca860291e2379ea6a35a608f384

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps