core: kemi - exposed set drop flag function

src/core/kemi.c

@@ -115,7 +115,7 @@ static int sr_kemi_core_log(sip_msg_t *msg, str *level, str *txt)
 /**
  *
  */
-static int sr_kemi_core_drop(sip_msg_t *msg)
+int sr_kemi_core_drop(sip_msg_t *msg)
 {
 	if(_sr_kemi_act_ctx==NULL)
 		return 0;

src/core/kemi.h

@@ -124,4 +124,6 @@ run_act_ctx_t* sr_kemi_act_ctx_get(void);
 str *sr_kemi_param_map_get_name(int ptype);
 str *sr_kemi_param_map_get_params(int *ptypes);
 
+int sr_kemi_core_drop(sip_msg_t *msg);
+
 #endif