Exclude two JFR tests to avoid noise with wrapper runs

Author: AlanBateman

test/jdk/ProblemList-vthread.txt

@@ -21,6 +21,9 @@ jdk/jfr/tool/TestPrintXML.java
 jdk/jfr/event/gc/detailed/TestPromotionFailedEventWithDefNew.java            8279836 generic-all
 jdk/jfr/event/gc/detailed/TestPromotionFailedEventWithParallelScavenge.java  8279836 generic-all
 
+jdk/jfr/event/runtime/TestVMOperation.java                       8282877 generic-all
+jdk/jfr/event/runtime/TestJavaMonitorWaitEvent.java              8282877 generic-all
+
 ####
 ## Tests failing because of issues with testng import in jtreg with wrapper.
 java/foreign/handles/Driver.java