bgpd: evpn pip display pip values

bgpd: evpn pip display pip values

Display pip system mac and ip values
in per vni detail output.

Ticket:CM-26190
Reviewed By:
Testing Done:

Following new values add to the below output
for L3vni:

  System-IP: 27.0.0.11
  System-MAC: 00:02:00:00:00:2e
  Router-MAC: 44:38:39:ff:ff:01

TORC11# show bgp l2vpn evpn vni 4002
VNI: 4002 (known to the kernel)
  Type: L3
  Tenant VRF: vrf2
  RD: 141.2.1.2:2
  Originator IP: 36.0.0.11
  Advertise-gw-macip : n/a
  Advertise-pip: Yes
  System-IP: 27.0.0.11
  System-MAC: 00:02:00:00:00:2e
  Router-MAC: 44:38:39:ff:ff:01
  Import Route Target:
    5546:4002
  Export Route Target:
    5546:4002

Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>