Setting 'HAB_FALLBACK_CHANNEL'

Signed-off-by: Abhijit Gadgil <agadgil@progress.com>

Author: agadgil-progress

.expeditor/scripts/release_habitat/build_component-aarch64-darwin.sh

@@ -36,7 +36,7 @@ import_keys
 ${hab_binary} pkg install chef/hab-studio -c aarch64-darwin-opt
 
 export HAB_BLDR_CHANNEL="$channel"
-export HAB_REFRESH_CHANNEL="aarch64-darwin-opt"
+export HAB_STUDIO_SECRET_HAB_FALLBACK_CHANNEL="aarch64-darwin-opt"
 
 echo "--- :hab: Running hab pkg build for $package_path"
 sudo -E "${hab_binary}" pkg build "$package_path"