CBQE-1871: add limit param and reduce items count in boundary tests for views

If we have more items python memory cannot handle it

Change-Id: Ifec930452abeca3209fbb9580399b09c72f831fc
Reviewed-on: http://review.couchbase.org/32908
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>