Quickly exit VtsHalNeuralnetworks*TargetTest on failure

This change adds the AndroidTest.xml flag --gtest_break_on_failure to
cause the gtest to terminate after an error has been reached. This early
termination is important in the case where an NN HAL service crashes
mid-test, and all remaining tests would otherwise continue to run.

Bug: 197035200
Test: m vts -j
Test: vts-tradefed
Change-Id: I0b9a14345475e432b93f92c23010a8b39712443a
Merged-In: I0b9a14345475e432b93f92c23010a8b39712443a
(cherry picked from commit ac45a5d77ea1a466aa73a5e4ca0a07c1db4f8fc6)
(cherry picked from commit 535f8c809874da71efddb838e01f4d2e95b1971e)
5 files changed