Newly added test
test/jdk/javax/swing/text/html/TestJLabelWithHTMLText.java
sometimes times out in ubuntu 18.04 linux

"MainThread" #14 prio=5 os_prio=0 cpu=87.07ms elapsed=120.15s tid=0x00007fbf642a2000 nid=0x699c in Object.wait() [0x00007fbf2342b000]
   java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(java.base@14-internal/Native Method)
- waiting on <0x000000071661ac00> (a java.awt.EventQueue$1AWTInvocationLock)
at java.lang.Object.wait(java.base@14-internal/Object.java:321)
at java.awt.EventQueue.invokeAndWait(java.desktop@14-internal/EventQueue.java:1361)
- locked <0x000000071661ac00> (a java.awt.EventQueue$1AWTInvocationLock)
at java.awt.EventQueue.invokeAndWait(java.desktop@14-internal/EventQueue.java:1342)
at javax.swing.SwingUtilities.invokeAndWait(java.desktop@14-internal/SwingUtilities.java:1480)
at TestJLabelWithHTMLText.main(TestJLabelWithHTMLText.java:40)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@14-internal/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base@14-internal/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@14-internal/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java.base@14-internal/Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)