fix bug with putting the unknown users doc to ES
fix bug with putting the unknown users doc to ES

gmimano/commcaretest,SEL-Columbia/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,puttarajubr/commcare-hq,qedsoftware/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,puttarajubr/commcare-hq,SEL-Columbia/commcare-hq,puttarajubr/commcare-hq,gmimano/commcaretest,qedsoftware/commcare-hq,gmimano/commcaretest,qedsoftware/commcare-hq,puttarajubr/commcare-hq,qedsoftware/commcare-hq,SEL-Columbia/commcare-hq