meta-agl-lxc: rename LXC bbappend

Rename LXC bbapppend to handle upgrade to LXC 5.x upstream.

Bug-AGL: SPEC-3819

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Iec8e27c56cb7d6f2908a7a7bfe907e41b5bdfb07

diff --git a/meta-agl-lxc/recipes-container/lxc/lxc_4.%.bbappend b/meta-agl-lxc/recipes-container/lxc/lxc_%.bbappend
similarity index 100%
rename from meta-agl-lxc/recipes-container/lxc/lxc_4.%.bbappend
rename to meta-agl-lxc/recipes-container/lxc/lxc_%.bbappend