Update doclava template to include ReferenceObject meta data for devsite but only include the 'path' information for DAC docs because I'm not sure how other projects want to use that field https://developers.google.com/internal/publishing/reference/microdata/referenceobject bug: 62869488
am: 42466d0f94

Change-Id: I11d3d532bd8fc71e582d37ea0d553267abaf10e7