in base/consul.py functions
sesson create
session renew
session destroy
session list
session node

token is not passed in the http requets and it gives ACL permission denied error when using with consul server with ACL enabled .

adding the code
token = self.agent.token
if token:
params.append(('token', token))

in the function resolves the issues and passes the ACL token in the http requests calls .
without these ACL error is observed in these function calls .