vxlan-gpe: agent keeps creating remote-mapping entries in VPP

[Onong Tayeng]

The remote-mapping entries for a given locator set keeps growing:

DBGvpp# sh one l2 arp entries
Table: 65999
        10.0.2.225 -> fa:16:3e:d5:6d:83
        10.0.3.48 -> fa:16:3e:d7:36:fe
        10.0.2.14 -> fa:16:3c:f5:aa:db
DBGvpp# sh lisp locator-set
Locator-set Locator Priority Weight
net-vpp-gpe-lset-1 1 1 1
<remote-1> 0.0.0.0 1 1
<remote-2> 0.0.0.0 1 1
<remote-3> 0.0.0.0 1 1
<remote-4> 0.0.0.0 1 1
<remote-5> 0.0.0.0 1 1
<remote-6> 0.0.0.0 1 1
<remote-7> 0.0.0.0 1 1
<remote-8> 0.0.0.0 1 1
<remote-9> 0.0.0.0 1 1
<remote-10> 0.0.0.0 1 1
DBGvpp#