gitignore: Reorder alphabetically

One of our latest patches added some files to .gitignore. However,
not in the right place leaving the file not sorted. Since my git
is set up to sort these files contents, fix this issue as it keeps
showing up in git status.

.gitignore

@@ -104,11 +104,11 @@
 /src/libvirt_lxc
 /src/locking/qemu-sanlock.conf
 /src/locking/test_libvirt_sanlock.aug
-/src/lxc/test_libvirtd_lxc.aug
 /src/lxc/lxc_controller_dispatch.h
 /src/lxc/lxc_monitor_dispatch.h
 /src/lxc/lxc_protocol.c
 /src/lxc/lxc_protocol.h
+/src/lxc/test_libvirtd_lxc.aug
 /src/qemu/test_libvirtd_qemu.aug
 /src/remote/*_client_bodies.h
 /src/remote/*_protocol.[ch]