Do replay when watching topo

[SeanCondon]

onos-config calls Watch on onos-topo on connection. This must replay existing entities - with noreplay=true only Entities that are created after startup will arrive in to onos-config.

An alternate approach is to do List first for existing devices and then watch, but this is never satisfactory as there will always be either a gap or an overlap with the 2 methods, with the risk of duplicates or missing entities.

Also I added some filters on Entity events from onos-topo - a version and a kindid are always required for onos-config.

[adibrastegarnia]

We create device simulators here: I think we need to add kind here as well:

onos-config/test/utils/gnmi/utils.go

Line 133 in 0699cfe

return &device.Device{

[SeanCondon]

We create device simulators here: I think we need to add kind here as well:

onos-config/test/utils/gnmi/utils.go

Line 133 in 0699cfe

return &device.Device{

Kind is taken from the Type given here - I've ran the gnmi suite and they all pass