PYCBC-981: Fix for PEP517 install issue
PYCBC-981: Fix for PEP517 install issue

Change-Id: Id2485b387995271bf4411ec3cf65327d34f5883b
Reviewed-on: http://review.couchbase.org/c/couchbase-python-client/+/132585
Tested-by: Ellis Breen <9d8041ac7ead8d3e1f3217c04c7ed5e3098c2381@couchbase.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: David Kelly <d83cd2a93a916ce0b0d4c1349b44be044799feca@gmail.com>

couchbase/couchbase-python-client,couchbase/couchbase-python-client