increasing recovery timeout to 2400 sec, as for 1B items it may take longer
increasing recovery timeout to 2400 sec, as for 1B items it may take longer

Change-Id: I413f0692154d94f37ae31887d3c084e85953e4b5
Reviewed-on: http://review.couchbase.org/74220
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Mahesh Mandhare <f05f25073b6d9a2858c6a374b80c02d5a2bccf33@couchbase.com>

pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner