RFR(S): JDK-8244973: serviceability/attach/RemovingUnixDomainSocketTest.java fails "stderr was not empty"

[Alex Menkov]

Hi all,

please review tiny (and I suppose trivial) fix for
https://bugs.openjdk.java.net/browse/JDK-8244973
webrev:
http://cr.openjdk.java.net/~amenkov/jdk15/RemovingUnixDomainSocket_merge/webrev/

This bug is a result of bad merge:
base:
         out.stderrShouldBeEmpty();

fix for JDK-8242009:
-        out.stderrShouldBeEmpty();
+        out.stderrShouldBeEmptyIgnoreVMWarnings();

fix for JDK-8235211:
-        out.stderrShouldBeEmpty();
+        out.shouldHaveExitValue(0)
+                .stderrShouldBeEmpty();

Test run is in progress.

--alex