Update HIVObservationHIVCondition.map

Added onset date to structuremap for creating the HIV condition from the observation from KenyaEMR.

input/maps/HIVObservationHIVCondition.map

@@ -23,6 +23,7 @@ group HIVObservationHIVCondition(
             patient -> cond.subject as subject then {
               patient -> subject.reference = reference(patient) "setSubjectRef";
             } "setSubject";
+            obsentry.effective as effective -> cond.onset = effective "setOnset";
             obsentry -> cond.code as ccode then {
               obsentry -> ccode.coding as coding then {
                 obsentry -> coding.code = '86406008',