TED update - 19: adding new TE-Link reservation priority based index

Added #new #priority #based #indexing on the #TE-Link #reservations in the TED module. This will enable to #query TE-Link reservations #based on their #priority. This will be useful when #preemptable #bandwidth has to be calculated from the existing reservations on a TE-Link. When preemption is enabled and #unreserved #bandwidth is not being available, some of the existing #lower #priority reservations will be released and used to fulfill the current requirement.

#TED update 19 ...
[commit f24555b15e06dc91475482fcb6e58debc0680760] (https://github.com/nes-repo/NES-Open-Switch/commit/f24555b15e06dc91475482fcb6e58debc0680760)