Show assocKeys for finders in docgen.

RB=150230
R=jbetz,jwalker,si-dev
A=jbetz
add routing aware client

RB=144421
R=osumampo,cpettitt,slim,si-dev
A=osumampo
Fix wrong assocKey in the idl file.
Add detection of wrong assocKey in RestRequestBuilderGenerator.

RB=151155
R=osumampo,jbetz,slim,dhoa
A=dhoa