conf: disk: Extract iotune parsing into a separate func
conf: disk: Extract iotune parsing into a separate func

fabianfreyer/libvirt,jfehlig/libvirt,nertpinx/libvirt,eskultety/libvirt,jfehlig/libvirt,crobinso/libvirt,zippy2/libvirt,crobinso/libvirt,olafhering/libvirt,jardasgit/libvirt,taget/libvirt,jardasgit/libvirt,eskultety/libvirt,taget/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,eskultety/libvirt,VenkatDatta/libvirt,eskultety/libvirt,andreabolognani/libvirt,nertpinx/libvirt,libvirt/libvirt,fabianfreyer/libvirt,taget/libvirt,datto/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,libvirt/libvirt,jardasgit/libvirt,olafhering/libvirt,zippy2/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,taget/libvirt,fabianfreyer/libvirt,datto/libvirt,andreabolognani/libvirt,datto/libvirt,andreabolognani/libvirt,taget/libvirt,jardasgit/libvirt,datto/libvirt,jfehlig/libvirt,zippy2/libvirt,nertpinx/libvirt,eskultety/libvirt,olafhering/libvirt,datto/libvirt,zippy2/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,crobinso/libvirt,crobinso/libvirt,libvirt/libvirt,olafhering/libvirt,nertpinx/libvirt,libvirt/libvirt,fabianfreyer/libvirt,jardasgit/libvirt