Force CommonsMetadata on beta to recalculate data from prod

This will cause CMD on beta to throw away the CMD results received
from (non-beta) Commons and derive the metadata locally. This
helps testing changes in CMD logic which have been deployed on
beta but not on production.

Soft-depends on I721dfcdb283b81c63cc4241786f593b1e5dcd065.

Also remove a duplicate key from labs config.

Change-Id: I40a62571cbe2fc0ace202df4f0d7ae1845457c1b
Merge "Force CommonsMetadata on beta to recalculate data from prod"