Code cleanup

ChangelogBackendTestCase.java:
Changed all uses of "Draft" to "ChangeNumber".
Used static imports for all TestCaseUtils methods.
Used more TestCaseUtils.addEntry() and TestCaseUtils.makeEntry().
Used CollectionUtils method vs. TestCaseUtils ones.
Used AutoRefactor.

git-svn-id: https://svn.forgerock.org/opendj/branches/opendj3-server-dev@11163 41b1ffd8-f28e-4786-ab96-9950f0a78031