[TESTBUG] AppCDS tests timed out with -Xcomp and --limit-modules option won't work with Graal

Both tests seem to have finished running successfully but timed out waiting for completion for a process. Timeout observed only on Windows platform so far.

runtime/appcds/jigsaw/modulepath/MainModuleOnly.java

[STDERR]

[2019-06-02T23:37:14.338252700Z] Waiting for completion for process 9168
[2019-06-02T23:37:14.338252700Z] Waiting for completion finished for process 9168
Long module path test cannot be tested on the Windows platform.
----------System.err:(1/16)----------
STATUS:Passed.

runtime/appcds/jigsaw/modulepath/ModulePathAndCP_JFR.java

[2019-06-02T23:42:47.074676200Z] Waiting for completion for process 10304
[2019-06-02T23:42:47.105933400Z] Waiting for completion finished for process 10304
[2019-06-02T23:42:47.105933400Z] Waiting for completion for process 10304
[2019-06-02T23:42:47.105933400Z] Waiting for completion finished for process 10304
[2019-06-02T23:42:47.184347200Z] Waiting for completion for process 10304
[2019-06-02T23:42:47.184347200Z] Waiting for completion finished for process 10304
----------System.err:(3/38)----------

JavaTest Message: Test complete.

result: Error. Agent error: java.lang.Exception: Agent 9 timed out with a timeout of 1200 seconds; check console log for any additional details


test result: Error. Agent error: java.lang.Exception: Agent 9 timed out with a timeout of 1200 seconds; check console log for any additional details