GMPLS update - 67: optimizing custom computed-path parameter entries

Updated #GMPLS #custom #computed-path #parameter agent mapper routines in GMPLS module. The agent #iterator routines and #mapper #routine has been updated to use standard #computed-path entry based #indexing. This will access the custom computed-path entries by using the #native #indexing. This removes references to the custom computed-path indexing used earlier. The custom computed-path parameter entries has been embedded in the standard computed-path entries. The custom computed-path #entries add support for #attributes like GMPLS #forward-label, #reverse-label, etc ...  These labels are computed and populated as part of the path-computation operation. The custom computed-path #entries add support for #media specific labels ( #Ethernet / #SONET / #SDH / #OTN ) by maintaining the GMPLS #label-type and #label-value #attributes.

#GMPLS update 67 ...
[commit babc88764b1d830576fe24cf7c9d0f6a161a9dca] (https://github.com/nes-repo/NES-Open-Switch/commit/babc88764b1d830576fe24cf7c9d0f6a161a9dca)