qemu: snapshot: Audit actual disk snapshot creation
qemu: snapshot: Audit actual disk snapshot creation

Currently we'd audit that we managed to format the data for the
'transaction' command rather than the (un)successful attempt to create
the snapshot.

Move the auditing code so that it can actually audit the result of the
'transaction' command.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

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