Avoid using word failed in non-fatal debug messages

[JaroslavTulach]

How do you search for failures in Travis and GitHubActions runs? I search for failed like in The test XYZTest failed. However there are other, disturbing occurrences of that word in the test logs. There was 52 occurrences in a recent log. Here are three examples:

 [junit] WARNING: Warning - project of class org.netbeans.modules.java.source.usages.TestSupport$TestProject in /home/runner/work/netbeans/netbeans/java/java.source.base/build/test/unit/work/o.n.m.j.s.u.S/sipwop/prj0 failed to supply a LogicalViewProvider in its lookup

     [junit] SEVERE: Error in RequestProcessor org.netbeans.modules.editor.settings.storage.preferences.PreferencesImpl$1
    [junit] org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException: The folder parameter cannot be null
    [junit] 	at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1459)
    [junit] 	at org.netbeans.modules.editor.settings.storage.preferences.PreferencesImpl.asyncInvocationOfFlushSpi(PreferencesImpl.java:478)
    [junit] 	at org.netbeans.modules.editor.settings.storage.preferences.PreferencesImpl.putSpi(PreferencesImpl.java:274)

and

   INFO: ModificationResult commit failed with an exception: 
    [junit] java.io.IOException
    [junit] 	at org.netbeans.api.java.source.ModificationResult.processDocument(ModificationResult.java:385)
    [junit] 	at org.netbeans.api.java.source.ModificationResult.commit2(ModificationResult.java:330)
    [junit] 	at org.netbeans.api.java.source.ModificationResult.access$000(ModificationResult.java:71)

This PR changes the wording, so the search is easier. Hopefully none of these messages form an important API and no test fails because of changing them.

[mbien]

excellent! I also added a script recently which lists all failed tests on the very bottom of the log.

[MartinBalin]

Nice