Added more meat to the VtoReaderUpdate test case.
Added more meat to the VtoReaderUpdate test case.

cverges/dnp3,cverges/dnp3,tweakmy/dnp3-old,tweakmy/dnp3-old,tweakmy/dnp3-old,gec/dnp3,sentient-energy/emsw-opendnp3-mirror,sentient-energy/emsw-opendnp3-mirror,gec/dnp3,tweakmy/dnp3-old,cverges/dnp3,cverges/dnp3,sentient-energy/emsw-opendnp3-mirror,sentient-energy/emsw-opendnp3-mirror,gec/dnp3,cverges/dnp3,cverges/dnp3,sentient-energy/emsw-opendnp3-mirror,gec/dnp3,sentient-energy/emsw-opendnp3-mirror,cverges/dnp3,sentient-energy/emsw-opendnp3-mirror