Two shenandoah tests fail due to can't find ClassFileInstaller

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Test summary
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   TEST TOTAL PASS FAIL ERROR
   jtreg:test/hotspot/jtreg/gc/shenandoah/TestReferenceRefersToShenandoah.java
>> 4 2 0 2 <<
   jtreg:test/hotspot/jtreg/gc/shenandoah/TestReferenceShortcutCycle.java
>> 2 0 0 2 <<
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TEST FAILURE


ACTION: build -- Not run. Test running...
REASON: Named class compiled on demand
TIME: eInstaller seconds
messages:
command: build ClassFileInstaller
reason: Named class compiled on demand

TEST RESULT: Error. can't find ClassFileInstaller in test directory or libraries