handle nil property omitted from RetrieveProperties result
handle nil property omitted from RetrieveProperties result

10xEngineer/rbvmomi,omar-infinio/rbvmomi,jusko/rbvmomi,rapid7/rbvmomi,synthead/rbvmomi,frapposelli/vagrant-rbvmomi,rlane/rbvmomi,frapposelli/vagrant-rbvmomi,rapid7/rbvmomi,10xEngineer/rbvmomi,vmware/rbvmomi,rlane/rbvmomi,jusko/rbvmomi,rcorrieri/rbvmomi,logankimmel/rbvmomi,synthead/rbvmomi