GMPLS update - 83: updating custom actual-path agent mapper routines

Updated #custom #actual-path agent mapper routines in GMPLS module. The agent #iterator routines and #mapper #routine has been updated to use standard #actual-path entry based #indexing. This will access the actual-path entries by using the #native #indexing. This removes references to the custom actual-path indexing used earlier. This will reduce the memory requirement associated with the custom actual-path entries. The custom actual-path #entries add support for #attributes like #hop-forward-label and #hop-reverse-label. The #label-type attribute adds support for #media #specific labels ( #Ethernet / #SONET / #SDH / #OTN ) through the #label-type and #label-value attributes.

#GMPLS update 83 ...
[commit 7ed47f8af6348d2d9dfa61ac9d6e0a7f771e1844] (https://github.com/nes-repo/NES-Open-Switch/commit/7ed47f8af6348d2d9dfa61ac9d6e0a7f771e1844)