p_usrloc: Fix #1265: missing columns in location.sql file.

Add columns referenced by [p_usrloc_mod.c](https://github.com/kamailio/kamailio/blob/6c01e2692d5ff56dda54d21469d32c4d3dcbfbff/src/modules/p_usrloc/p_usrloc_mod.c#L65)

src/modules/p_usrloc/location.sql

@@ -1,6 +1,7 @@
 drop table if exists location;
 CREATE TABLE location (
     id INT(10) UNSIGNED AUTO_INCREMENT PRIMARY KEY NOT NULL,
+    ruid VARCHAR(64) DEFAULT '' NOT NULL,
     username VARCHAR(64) DEFAULT '' NOT NULL,
     domain VARCHAR(64) DEFAULT NULL,
     contact VARCHAR(255) DEFAULT '' NOT NULL,
@@ -15,7 +16,8 @@ CREATE TABLE location (
     cflags INT(11) DEFAULT 0 NOT NULL,
     user_agent VARCHAR(255) DEFAULT '' NOT NULL,
     socket VARCHAR(64) DEFAULT NULL,
-    methods INT(11) DEFAULT NULL
+    methods INT(11) DEFAULT NULL,
+    reg_id INTEGER DEFAULT 0 NOT NULL
 ) ENGINE=MyISAM;
 
 CREATE INDEX account_contact_idx ON location (username, domain, contact);