libsrdb1: Make IPv6 addresses fit into lcr_gw

- Resize lcr_gw.ip_addr column to fit IPv6 addresses.

lib/srdb1/schema/lcr_gw.xml

@@ -46,9 +46,9 @@
     <column id="ip_addr">
         <name>ip_addr</name>
         <type>string</type>
-        <size>15</size>
+        <size>47</size>
         <null/>
-        <description>IP Address of the gateway</description>
+        <description>IPv4 or IPv6 Address of the gateway</description>
     </column>
 
     <column id="hostname">