CBQE-0: increase timeout to expect if server is reboot

Change-Id: I0bf4d0998d1ac68136deeccc0aa88046eada1ce8
Reviewed-on: http://review.couchbase.org/31231
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>