Packaging: Remove java-6 directories from debian init script

Closes #6350
Added missing comma in suggester example
[Test] set search request size testGeohashCellFilter

The default of 10 is not good enough as previously thought.
Java API: Make sure afterBulk is always called in BulkProcessor after beforeBulk

Moved BulkProcessor tests from BulkTests to newly added BulkProcessorTests class.
Strenghtened BulkProcessorTests by adding randomizations to existing tests and new tests for concurrent requests and expcetions.
Also made sure that afterBulk is called only once per request if concurrentRequests==0.

Closes #5038
[TEST] Fix assert