Update setup.py to include acouchbase.management module

Change-Id: Ie3e06d5e1efbaa1462a0e260d5953a5a93a32993
Reviewed-on: http://review.couchbase.org/c/couchbase-python-client/+/164902
Reviewed-by: David Kelly <davidmichaelkelly@gmail.com>
Tested-by: Jared Casey <jared.casey@couchbase.com>

setup.py

@@ -58,6 +58,7 @@ def handle_build_type_and_gen_deps():
 
 packages = {
     'acouchbase',
+    'acouchbase.management',
     'couchbase',
     couchbase_core,
     couchbase_core + '.views',