Pulp 3 adopts dynaconf

Pulp 3 now uses dyanconf to manage its settings. dynaconf allows for storing settings in multiple file formats. By default, Pulp will look for settings in /etc/pulp/settings.py. To specify another settings file, set the PULP_SETTINGS environment variable. Each of the settings can also be set by prepending PULP_ to the name and setting it as an environment variable. Environment variables take precedence over all other configuration sources. Check out the Pulp 3 docs for more details.