Alter the topic column in audit db

[rajubairishetti]

Alter the topic column from varchar(25) to varchar(50) in audit DB.

Error log:

25 Mar 2014 06:12:30,905 [AuditStatsFeeder_testcluster1] ERROR com.inmobi.conduit.audit.util.AuditDBHelper - SQLException while updating daily table
org.postgresql.util.PSQLException: ERROR: value too long for type character varying(25)

Schema:

Table "public.daily_conduit_summary"
Column | Type | Modifiers
--------------+-----------------------+-----------
topic | character varying(25) | not null
...