Use internal network to fix uwsgi load balancer

[Xpirix]

This is an improvement for the uwsgi load balancer

• Use an internal network to make the service distribute the load over the 2 uwsgi containers
• Set uwsgi workers to 8
• Increase harakiri to 100

Please find below a screenshot of the stats of uwsgi containers in a bench test (locally):

[timlinux]

LGTM