Test compiler/jvmci/events/JvmciNotifyBootstrapFinishedEventTest.java fails with following assertion when compilation level is set.

# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/HUDSON/workspace/9-2-build-linux-amd64-phase2/jdk9/5960/hotspot/src/share/vm/compiler/compileBroker.cpp:1048), pid=18070, tid=18071
# assert(!TieredCompilation || comp_level <= TieredStopAtLevel) failed: Invalid compilation level
#
# JRE version: Java(TM) SE Runtime Environment (9.0+152) (fastdebug build 9-ea+152)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 9-ea+152, compiled mode, tiered, jvmci, jvmci compiler, compressed oops, g1 gc, linux-amd64)
# Core dump will be written. Default location: Core dumps may be processed with "/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e" (or dumping to /scratch/home/aurora/sandbox/results/workDir/compiler/jvmci/events/JvmciNotifyBootstrapFinishedEventTest/core.18070)
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#