dgraph_add_instance
r = dgraph_add_instance(inst_fmri, inst, B_FALSE);
err = dgraph_add_instance(fmri, inst, B_TRUE);
r = dgraph_add_instance(cfmri, inst, B_TRUE);
err = dgraph_add_instance(fmri, inst, B_TRUE);
int dgraph_add_instance(const char *, scf_instance_t *, boolean_t);