docs: Add news mention of default fs/netfs storage pool mount options
docs: Add news mention of default fs/netfs storage pool mount options

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>
Reviewed-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

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