Sometimes when pushing vpls config file, vpls app does not load all the configurations

This happens about 1 in 5 times.

Steps to reproduce:
Start 3 node ONOS
start vpls topology (tools/test/topo/vpls.py)
activate vpls application
discover hosts via pinging
push vpls config file (tools/test/topo/vpls.json)
NetCfg is correct
vpls show reflects only part of the configurations.
There are no errors in the logs when pushing the config file

Example (note h3 is missing from VPLS2):
onos> netcfg apps
{
"org.onosproject.provider.lldp" : {
"suppression" : {
"deviceTypes" : [ "ROADM", "OTN", "FIBER_SWITCH" ],
"annotation" : "

{\"no-lldp\":null}

"
}
},
"org.onosproject.vpls" : {
"vpls" : {
"vplsList" : [

{ "name" : "VPLS1", "interfaces" : [ "h1", "h2", "h5", "h6" ] }

,

{ "name" : "VPLS2", "interfaces" : [ "h3", "h4" ], "encapsulation" : "vlan" }

]
}
}
}
onos> vpls show
Configured VPLSs
----------------
VPLS name: VPLS1
Associated interfaces: [h1, h2, h5, h6]
Encapsulation: NONE
----------------
VPLS name: VPLS2
Associated interfaces: [h4]
Encapsulation: VLAN
----------------
onos>