IS-IS update 4: optimizing agent framework

Updated the #agent #framework in IS-IS module. The #generic #IS-IS #framework has been #optimized to use shorter #variable #names and removed the #length variable for many #multi-size #parameters. This makes uses of short & easier variable names. The memory size of many multi-size variables have been made static and length support has been removed reducing the memory requirement.

#IS-IS update 4 ...
[commit 253a05a0c60371b2864f3d631461404b5e347d7e] (https://github.com/nes-repo/NES-Open-Switch/commit/253a05a0c60371b2864f3d631461404b5e347d7e)

IS-IS agent update

Added #IS-IS #agent #framework for basic #management #interface in IS-IS module. This will enable the #operator to #configure basic IS-IS parameters and query run-time dynamic info from IS-IS module.

#ISO10589 IS-IS update 2 ...
[commit 6e25d9fe8cc5560b1c74ea30c2466fb3c419573c]

New modules (IS-IS and SPB) in stack

Adding IS-IS and SPB modules skeleton in the stack. This will add support for IEEE 802.1aq - Shortest Path Bridging ( #SPB ) in the stack. ISO10589 - Intermediate System to Intermediate System ( #IS-IS ) #module will provide link state flooding and collection support needed for SPB.

#ISO10589 IS-IS + #802-1AQ SPB update ...
[commit 7df4330117aa756f59c871393cfe1423c2420b5d]