Complete support for Compressed APEXes in ART APEX test scripts.

Also fix some checks in script `build/apex/art_apex_test.py`.

Test: env OVERRIDE_TARGET_FLATTEN_APEX=false \
          OVERRIDE_PRODUCT_COMPRESSED_APEX=false \
        art/build/apex/runtests.sh
Test: env OVERRIDE_TARGET_FLATTEN_APEX=true \
          OVERRIDE_PRODUCT_COMPRESSED_APEX=false \
        art/build/apex/runtests.sh
Test: env OVERRIDE_TARGET_FLATTEN_APEX=false \
          OVERRIDE_PRODUCT_COMPRESSED_APEX=true \
        art/build/apex/runtests.sh
Test: env OVERRIDE_TARGET_FLATTEN_APEX=true \
          OVERRIDE_PRODUCT_COMPRESSED_APEX=true \
        art/build/apex/runtests.sh
Bug: 188809029
Change-Id: Ida714cef146c9318429e30503912511d23a3891a
2 files changed