Standalone VM

[dataclouder]

• Add types to support standalone VM
  • types.CreateVmParams and types.InstantiateVmTemplateParams
• Rename 'types.VM' to 'types.Vm'
• Add HREF to VdcComputePolicy struct
• Add functions to create and retrieve standalone VM
  • Vdc methods CreateStandaloneVMFromTemplate, CreateStandaloneVMFromTemplateAsync CreateStandaloneVm, CreateStandaloneVmAsync
  • Vdc methods QueryVmByName, QueryVmById
• Add functions to delete standalone VM
  • VM methods Delete, DeleteAsync
• Add standaloneVm to cleanup function
• Fix 'VM' mentioning in comments and tests

[Didainius]

Thanks! Pass one - I still need to dig into the actual process better (will come back once more after provider PR initial review).

[lvirbalas]

LGTM!