Upgrade Python SDK to version 2.2.1
Upgrade Python SDK to version 2.2.1

For XATTR support.

Change-Id: Ie4e20de0c8f97dab1873d04af08e0ad6362cebe6
Reviewed-on: http://review.couchbase.org/75569
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

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