Don't build everything for APKCERTS_FILE

Before this change, to build APKCERTS_FILE you have to build any modules
in the system first, which include modules that only need to be checked,
instead of being built. This can reduce the build time when "dist" is
specified.

Change-Id: I64bee67977adcaf7b7c8df3f8f6492c9c33bc69d
1 file changed