Fix test failure when not geo and query is point that falls on shared grid border and predicate is Within.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1580754 13f79535-47bb-0310-9956-ffa450edef68
tests: improve test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1580755 13f79535-47bb-0310-9956-ffa450edef68