[INLONG-489] Add the maximum message length parameter setting

[dockerzhang]

At present, the maximum packet length of a message is set  through the TBaseConstants.META_MAX_MESSAGEG_DATA_SIZE and and the value can not be adjusted according to the needs during the running period. In an environment that exceeds the specified package length, we have to modify the value and recompile and publish the whole package, which brings trouble to the system operation and maintenance. If we can set the value according to the dynamically configurable topic, the operation and maintenance management of the system will become very simple

JIRA link - [INLONG-489] created by gosonzhang