Add missing typedef keyword

Without this keyword these struct definitions are considered by GCC as a
variable definition.

This was catched because there is a more strict check about these
variable definitions since GCC 10:

* https://gcc.gnu.org/gcc-10/porting_to.html#common

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>

modules/cachedb_local/cachedb_local_replication.h

@@ -34,10 +34,10 @@ extern struct clusterer_binds clusterer_api;
 extern str cache_repl_cap;
 extern int cluster_id;
 
-enum cachedb_rr_persist {
+typedef enum cachedb_rr_persist {
 	RRP_NONE,
 	RRP_SYNC_FROM_CLUSTER,
-} rr_persist_t;
+} cachedb_rr_persist_t;
 
 void receive_binary_packet(bin_packet_t *packet);
 void receive_cluster_event(enum clusterer_event ev, int node_id);

modules/usrloc/ul_mod.h

@@ -44,7 +44,7 @@ extern enum ul_sql_write_mode sql_wmode;
 extern enum ul_pinging_mode pinging_mode;
 
 /* manner in which node data should be restored (or not) following a restart */
-enum ul_rr_persist {
+typedef enum ul_rr_persist {
 	RRP_NONE,
 	RRP_LOAD_FROM_SQL,
 	RRP_SYNC_FROM_CLUSTER,
@@ -53,14 +53,14 @@ enum ul_rr_persist {
 
 /* if using SQL for restart persistency,
  * should runtime SQL blocking writes be performed eagerly or lazily? */
-enum ul_sql_write_mode {
+typedef enum ul_sql_write_mode {
 	SQL_NO_WRITE,
 	SQL_WRITE_THROUGH,
 	SQL_WRITE_BACK,
 } ul_sql_write_mode_t;
 #define bad_sql_write_mode(wm) ((wm) < SQL_NO_WRITE || (wm) > SQL_WRITE_BACK)
 
-enum ul_pinging_mode {
+typedef enum ul_pinging_mode {
 	PMD_OWNERSHIP,
 	PMD_COOPERATION,
 } ul_pinging_mode_t;

modules/usrloc/usrloc.h

@@ -36,7 +36,7 @@
 #include "ul_callback.h"
 #include "ul_dbg.h"
 
-enum ul_cluster_mode {
+typedef enum ul_cluster_mode {
 	CM_NONE,
 	CM_FEDERATION,
 	CM_FEDERATION_CACHEDB,