conf: do lxc.mount.entry mounts right after lxc.mount.fstab
conf: do lxc.mount.entry mounts right after lxc.mount.fstab

These configuration options use the same syntax and therefore it seems
more intuitive to have the same behavior for both of them, which is
not the case today since mount hooks and autodev mounts are called
between the two.

See: https://github.com/lxc/lxc/issues/2932

Signed-off-by: Felix Abecassis <55aebb135999a2c3fc3e3a88716154833ef9e5ed@nvidia.com>

ss1h2a3tw/lxc,ss1h2a3tw/lxc,hallyn/lxc,hallyn/lxc,hallyn/lxc,ss1h2a3tw/lxc