Return parameterized ComplexResourceKey from MockBatchKVResponseFactory.createWithComplexKey().

RB=385511
R=vkabdebo,kparikh,rshendye,wzhu,jyung,bchesla,dbyrne,gpuchta,ynoh,idarmans,skuzmin,oshapira,jgourgou,cflei,ndave,lbajaj,mwu,ssinha,mhackman,kcholera,eleshem,amovsesy,bbarkley,sdathath,bahuang,sblackbu,staguer,sfoote,bayenew,gogenc,mruane,bbazarba,aguo,chpan,rli,crgomes,akalyan,nvaidya,luliu,xfan,jbernard,pypodima,yfang,greddy,prjain,hroskov,oleon,khayashi,sihde,lneiman,asun,cpruett,tni,rloh,bnakamot,vgupta,jchan,bhaidri
A=tni
Correct wrong RB number in previous commit.