bgpd: Update route-type-1 legend to match output

bgpd: Update route-type-1 legend to match output

Currently the route-type-1 output has the Ethernet Tag printed first and
not the ESI.

However the legend has the opposite format

For eg:
Current legend:
EVPN type-1 prefix: [1]:[ESI]:[EthTag]:[IPlen]:[VTEP-IP]
*> [1]:[0]:[03:44:38:39:ff:ff:01:00:00:01]:[32]:[192.168.100.2]
                    192.168.100.2                          0 65002 i
                    RT:65002:100 ET:8
*> [1]:[0]:[03:44:38:39:ff:ff:01:00:00:01]:[32]:[192.168.100.3]
                    192.168.100.3                          0 65003 i
                    RT:65003:100 ET:8

Signed-off-by: Aaron Pereira <aaronpereira88@gmail.com>