List was skipping directories. Include them, and add tests to ensure
the order and precedence is correct.
Bug: 72511641
Test: make libandroidfw_tests
Test: atest CtsContentTestCases:AssetManagerTest
Change-Id: Iadf45883283d3e4aae93bd7c3343745912e34fa0
Tests would expect parts of the APK to be unzipped and
maintained. Instead, we now decompress the required files
from the test APKs on test setup. This simplifies
test maintenance substantially.
Test: make libandroidfw_tests && libandroidfw_tests --testdata=frameworks/base/libs/androidfw/tests/data
Change-Id: I3d2100af22df913e02401dedcf9842cdb32b2a3b
