The test security_ChromiumOSLSM if failing fairly consistently on guado_moblab with the error "Failure: Failed 1 tests,UNKNOWN: Failed 1 tests"

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/testDetails?testName=security_ChromiumOSLSM&suite=bvt-inline&daysBack=7&board=guado_moblab&architecture=&boardFamily=&buildConfig=&reason=&version=&milestone=70&dut=&token=ALuFCnQhs_czg2OC_qnDmtwevB_7%3A1533250494063