[RESTRICT AUTOMERGE] Updated CTS test for Android Security b/68300072 Updated the return code to return EXIT_FAILURE when the test exits before hitting the vulnerability Bug: 68300072 Bug: 72323283 Test: Ran the new testcase on android-8.0.0_r11 with/without patch Change-Id: I6248bd4fa8430356b976994a75af6c94f671f885