[FEAT MERGE] log4100 branch

Co-authored-by: tino247 <tino247@126.com>
Co-authored-by: BinChenn <binchenn.bc@gmail.com>
Co-authored-by: HaHaJeff <jeffzhouhhh@gmail.com>

src/share/ob_tenant_switchover_status.cpp

@@ -24,9 +24,12 @@ static const char* TENANT_SWITCHOVER_ARRAY[] =
 {
   "INVALID",
   "NORMAL",
-  "SWITCHING",
+  "SWITCHING TO PRIMARY",
   "PREPARE FLASHBACK",
   "FLASHBACK",
+  "PREPARE SWITCHING TO STANDBY",
+  "SWITCHING TO STANDBY",
+  "PREPARE SWITCHING TO PRIMARY",
 };
 
 OB_SERIALIZE_MEMBER(ObTenantSwitchoverStatus, value_);