RFR(xs): 8225315 test java/util/ArrayDeque/WhiteBox.java isn't part of the jdk_collections test group

[Stuart Marks]

Hi all,

This test was added some time ago, but it wasn't added to the jdk_collections 
test group. Please review the patch appended below, which adds it to the right 
group. (The test was still run as part of the catch-all jdk_util_other group 
though.)

Bug link: https://bugs.openjdk.java.net/browse/JDK-8225315

s'marks


diff -r ef23ea332077 test/jdk/TEST.groups
--- a/test/jdk/TEST.groups	Tue Jun 04 11:55:51 2019 -0700
+++ b/test/jdk/TEST.groups	Tue Jun 04 17:52:11 2019 -0700
@@ -137,6 +137,7 @@
      java/util/AbstractList \
      java/util/AbstractMap \
      java/util/AbstractSequentialList \
+    java/util/ArrayDeque \
      java/util/ArrayList \
      java/util/Arrays \
      java/util/BitSet \