DERBY-6154 add non-order by cases to the BlobClob4BlobTest

While debugging DERBY-6092 it was noted that some other code
paths could be exercised by adding non order by queries to
one of the test cases. This change just reruns one of the
test cases with order by queries and then again with non-order by
queries.

This change adds non-order by test runs based on the
testPositionAgressive() test case.



git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1469000 13f79535-47bb-0310-9956-ffa450edef68