CBLT-179:  increase DELAY, also delay before each curl put

Change-Id: Ie09e4261c9e8580addf3b33d4ff5ac7619d8c214
Reviewed-on: http://review.couchbase.org/36720
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>