Replace statsd client

[aequitas]

The current statsd client will try to resolve the configured hostname on module import [0], this is far from ideal and will break if statsd container is not ready at the start of the application or its ip address changes.

[0] https://github.com/macobo/statshog/blob/master/statshog/defaults/django.py#L18

This module should be replaced or the django specific implementation should be rewritten to not do resolving at import.