RFR 8250235: java/lang/invoke/lambda/LambdaFileEncodingSerialization.java should be on the problem list

[Roger Riggs]

Please review adding an intermittent test to the ProblemList.

The test java/lang/invoke/lambda/LambdaFileEncodingSerialization.java 
has been failing
intermittently and fairly frequently. [1]

diff a/test/jdk/ProblemList.txt b/test/jdk/ProblemList.txt
--- a/test/jdk/ProblemList.txt
+++ b/test/jdk/ProblemList.txt
@@ -569,10 +569,11 @@
  
  java/lang/StringCoding/CheckEncodings.sh                        7008363 generic-all
  java/lang/ProcessHandle/InfoTest.java                           8211847 aix-ppc64
  java/lang/invoke/LFCaching/LFMultiThreadCachingTest.java        8151492 generic-all
  java/lang/invoke/LFCaching/LFGarbageCollectedTest.java          8078602 generic-all
+java/lang/invoke/lambda/LambdaFileEncodingSerialization.java    8249079 linux-x64
  
  ############################################################################
  
  # jdk_instrument


Issue:
   https://bugs.openjdk.java.net/browse/JDK-8250235

Webrev:
   http://cr.openjdk.java.net/~rriggs/webrev-problem-8250235/

[1] https://bugs.openjdk.java.net/browse/JDK-8249079
    LambdaFileEncodingSerialization.java failed "exitCode = 1 expected 
[true] but found [false]"

Thanks, Roger