GMPLS update - 4: added standard MPLS LSR management framework

Added #standard #MPLS #LSR #management #framework in GMPLS module. This adds the facility for #create/#modify/#remove #LSP #in-segment/#out-segment s. The operator can #create/#modify/#remove #cross-connect s between the in-segment s and out-segment s. There are separate configuration entries for managing #MPLS enabled #interface s in the LSR. The #label-stack on the segment s can be separately configured and maintained in the LSR.

#GMPLS update 4 ...
[commit 6e2e750f23e68edaad7f015066770f198f2e5ec4] (https://github.com/nes-repo/NES-Open-Switch/commit/6e2e750f23e68edaad7f015066770f198f2e5ec4)