CLOB value limits for "CONTENT" column for "RTGOV_ACTIVITIES" and "DESCRIPTION" column for "RTGOV_SITUATIONS" tables in DB2 is too short

Issue

• It has been discoverd that the CONTENT column of RTGOV_ACTIVITIES and DESCRIPTION column of RTGOV_SITUATIONS tables for RT-Gov are too short in the DB2 variant only.
• For DB2 database , they are defined as CLOB(10240), which is far too short for some message's content. In all other DB variants, they are defined with the maximum value for a CLOB. Please change them accordingly in the DB2 variant as well.