GMPLS update - 21: optimizing custom label-stack entries

#Updated #custom #label-stack agent mapper routines in GMPLS module. The agent #iterator routines and #mapper #routine has been updated to #use standard #label-stack entry based #indexing. This will access the port entries by using the #native #indexing. This removes references to the custom label-stack indexing used earlier. This will reduce the memory requirement associated with the custom label-stack entries.. The custom label-stack #entries add support for #label-stack #attribute s like GMPLS #label-type and #label-value, etc ...

#GMPLS update 21 ...
[commit c82d8945f808c023507bfa9e2b2a23d7f12770bc] (https://github.com/nes-repo/NES-Open-Switch/commit/c82d8945f808c023507bfa9e2b2a23d7f12770bc)