build-appliance-image: Create image in correct location

build-appliance-image: Create image in correct location

Due to the recipe now using variable IMGDEPLOYDIR instead of DEPLOY_DIR_IMAGE,
the final Build Appliance image ended up being created in a wrong location.

This patch assures the final ZIP image is created in identical location as before:

   tmp/deploy/images/<machine>/Yocto_Build_Apliance.zip

[YOCTO#10274]

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>