Fixed test case.

Bug: 111346876
Test: m -j FrameworksServicesTests && \
  adb install -r -t -g \
  ${OUT}/data/app/FrameworksServicesTests/FrameworksServicesTests.apk && \
  adb shell am instrument -e class \
  "com.android.server.locksettings.LockSettingsShellCommandTest" \
  -w "com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner"

Change-Id: I8ad425cb9777934b14eaf3c738411beed0357c99