adds instanceID node to form format if not already present
adds instanceID node to form format if not already present

SEL-Columbia/enketo,SEL-Columbia/enketo,makinacorpus/enketo,makinacorpus/enketo,makinacorpus/enketo,enketo/enketo-legacy,makinacorpus/enketo,makinacorpus/enketo,enketo/enketo-legacy,HydroLogic/enketo,enketo/enketo-legacy,HydroLogic/enketo,makinacorpus/enketo,HydroLogic/enketo