templates/debian: add aarch64 → arm64 mapping
templates/debian: add aarch64 → arm64 mapping

uname -m reports aarch64, but Debian calls the arch arm64

Signed-off-by: Evgeni Golov <19053590b75b2e27abe838a7e75cee7f61ba3686@debian.org>

hallyn/lxc,thmo/lxc,thmo/lxc,caglar10ur/lxc,caglar10ur/lxc,LynxChaus/lxc,LynxChaus/lxc,LynxChaus/lxc,hallyn/lxc,caglar10ur/lxc,aeris/lxc,terceiro/lxc,federicobriata/lxc,federicobriata/lxc,aeris/lxc,aeris/lxc,ss1h2a3tw/lxc,terceiro/lxc,ss1h2a3tw/lxc,thmo/lxc,federicobriata/lxc,terceiro/lxc,ss1h2a3tw/lxc,hallyn/lxc