Run unzip with -o -f for zipapex tests

Zipapex tests were failing because unzip would wait for user-input
before overwriting files.

Test: ./art/test/testrunner/run_build_test_target.py -j50 art-linux-bionic-x64-zipapex
Change-Id: I528da8d7b1af8b401b84ade1319050acf070c743
1 file changed