CFM update - 2: optimizing agent framework

Updated the #agent #framework in CFM module. The #generic #CFM #framework has been #optimized to use proper #variable #names and removed the #length variable for many #multi-size #parameters. All the non-VLAN aware part of CFM framework has been upgraded this way. This makes uses of straight forward variable names. The memory size of many multi-size variables have been made static and length support has been removed reducing the memory requirement.

#CFM update 2 ...
[commit 8cf80de977aef3b4ed96b5311a75664ceecdb706] (https://github.com/nes-repo/NES-Open-Switch/commit/8cf80de977aef3b4ed96b5311a75664ceecdb706)