MT#57563 fix ngcp.timzeone version as not_replicated

* the ngcp.timezone table is not replicated and hence
  the script must be also not replicated.
   - the script is renamed to _not_replicated
   - the ALTER TABLE ADD COLUMN is enhanced with
     "IF NOT EXISTS" to mitigate scenarios where
     somebody manually added the column on the other node,
     and to ensure that the upgrades are safe

Change-Id: Ic44f76b5f3f43ae4124cebad30d559224fa90b31

db_scripts/diff/15767.up

@@ -1,3 +0,0 @@
-USE ngcp;
-
-ALTER TABLE timezone ADD COLUMN version VARCHAR(32);

db_scripts/diff/15767_not_replicated.down

@@ -1,3 +1,4 @@
 USE ngcp;
+SET sql_log_bin=0;
 
 ALTER TABLE timezone DROP COLUMN version;

db_scripts/diff/15767_not_replicated.up

@@ -0,0 +1,4 @@
+USE ngcp;
+SET sql_log_bin=0;
+
+ALTER TABLE timezone ADD COLUMN IF NOT EXISTS version VARCHAR(32);