storage: Sheepdog: Separate creating of the volume from building
storage: Sheepdog: Separate creating of the volume from building

Separate the steps to create libvirt's volume metadata from the actual
volume building process.

jfehlig/libvirt,rlaager/libvirt,elmarco/libvirt,VenkatDatta/libvirt,crobinso/libvirt,jardasgit/libvirt,libvirt/libvirt,andreabolognani/libvirt,eskultety/libvirt,VenkatDatta/libvirt,libvirt/libvirt,taget/libvirt,eskultety/libvirt,shugaoye/libvirt,nertpinx/libvirt,jardasgit/libvirt,taget/libvirt,fabianfreyer/libvirt,rlaager/libvirt,crobinso/libvirt,elmarco/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,agx/libvirt,fabianfreyer/libvirt,elmarco/libvirt,eskultety/libvirt,datto/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,nertpinx/libvirt,eskultety/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,crobinso/libvirt,zippy2/libvirt,datto/libvirt,shugaoye/libvirt,elmarco/libvirt,andreabolognani/libvirt,crobinso/libvirt,olafhering/libvirt,olafhering/libvirt,shugaoye/libvirt,zippy2/libvirt,agx/libvirt,rlaager/libvirt,olafhering/libvirt,agx/libvirt,jfehlig/libvirt,zippy2/libvirt,libvirt/libvirt,jfehlig/libvirt,andreabolognani/libvirt,elmarco/libvirt,nertpinx/libvirt,datto/libvirt,shugaoye/libvirt,agx/libvirt,olafhering/libvirt,datto/libvirt,shugaoye/libvirt,taget/libvirt,nertpinx/libvirt,datto/libvirt,jardasgit/libvirt,taget/libvirt,andreabolognani/libvirt,rlaager/libvirt,VenkatDatta/libvirt,libvirt/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,zippy2/libvirt,agx/libvirt,eskultety/libvirt,nertpinx/libvirt,rlaager/libvirt,taget/libvirt,jardasgit/libvirt