tests: improve some cloud tests

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446945 13f79535-47bb-0310-9956-ffa450edef68
SOLR-3855: Fix compilation.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446951 13f79535-47bb-0310-9956-ffa450edef68