Make graph-collections run against 1.9.RC1

This PR will not pass the following test:

    https://github.com/neo4j/graph-collections/blob/master/src/test/java/org/neo4j/collections/indexprovider/TimelineIndexProviderTest.java#L120

Maybe a backport of this commit would fix it?

    https://github.com/neo4j/neo4j/commit/81909070a934fcd6732deecae18e48d2586cbee0