Implement Memcached connection

[jefmoura]

Proposal

We need to install the Python Memcached binding pylibmc, so users can connect to their memory-based cache server. Developers should be able to set location to ip:port values, where ip is the IP address of the Memcached daemon and port is the port on which Memcached is running.
https://docs.djangoproject.com/en/2.2/topics/cache/#memcached