checkpoint commit
* first working dvbswitch provider
* spec.configSpec.uplinkPortgroup = [basename] inherited bug
** first working uplinkPortPolicy
** can use vpshere client to add hosts to switch created via api
* first-draft tests/dvportgroup*pp
* unfinished type and provider for vc_dvportgroup
* map for dvportgroup (DVPortConfigSpecMap)
* dump_map altered for dvportgroup
* need DEFINED TYPE for dvportgroup