Remove special case handling of "ro." properties

Currently, properties that begin with "ro." are special cased to skip
over the "ro." part of the prefix before matching with entries in
property_contexts.  A change to init is removing this special case and
therefore, the "ro." prefixes must be explicitly added to
property_contexts.

Bug 26425619

Change-Id: I343f139a39abef99924e84e0d27699284f335d63