Bypass missing required module check on ASAN SANITIZE_TARGET build

ASAN SANITIZE_TARGET build may have missing dependencies due to
executables being skipped, thus bypass the required module check.
https://source.android.com/devices/tech/debug/asan#sanitize_target

Also streamline the bypassing logic.

Fix: 163802658
Test: TH
Test: lunch aosp_cf_x86_pasan-userdebug &&
  m SANITIZE_TARGET=address nothing
Change-Id: Ia43c942ce7eae718bf6fcd254307535e418a70e7