ELAN flows overlap with VPN flows in Table36

ELAN flows overlap with VPN flows in Table36

Issue:
======
ELAN flows overlap with VPN flows in Table36 as a result
of this issue L3VPN data traffic is lost.

Solution:
=========
This fix here attempts to make the following changes:
1. Make flows programmed by VPN into Table 36 (Terminating Service
Table) to carry a priority of 8 instead of the old priority of 5.

2. Make the floating-ip flows programmed by NAT into Table 36 (Terminating
Service
Table) to carry a priority of 8 instead of the old priority of 5.

3.  NAT does program NAPT-Switch to Non-NAPT-Switch flows into Table 36
with a priority of 10.  We have left this priority remain the same
(i.e., unchanged).

JIRA Ticket : NETVIRT-1619

Change-Id: If451756863b069eac06e788f83fcbad33966a2d3
Signed-off-by: Karthikeyan Krishnan <karthikeyangceb007@gmail.com>