Fix inconsistent dict member extension
Fix inconsistent dict member extension

If two portions of a list come back piecewise from the plugin that
are both lists, extend them rather than making a nested list.

xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,whowutwut/confluent,whowutwut/confluent,xcat2/confluent,whowutwut/confluent,whowutwut/confluent,jjohnson42/confluent