Logging in production is too verbose

[catlee]

In particular, treestatus logging is very chatty. From https://papertrailapp.com/systems/7e657f1c-ad44-404f-9b89-f69f5b94446a/events:

Jun 05 10:26:53 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:53.737851 connexion.apis.flask_api: Got data and status code (200) 
Jun 05 10:26:53 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:53.736777 connexion.apis.flask_api: Getting data and status code 
Jun 05 10:26:53 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:53.740073 connexion.apis.flask_api: Got data and status code (200) 
Jun 05 10:26:53 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:53.739156 connexion.apis.flask_api: Getting data and status code 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.599865 connexion.apis.flask_api: Getting data and status code 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.602221 connexion.decorators.parameter: Function Arguments: ['tree'] 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.601274 connexion.decorators.validation: http://treestatus.mozilla-releng.net/trees/mozilla-central validating parameters... 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.604995 connexion.apis.flask_api: Getting data and status code 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.605777 connexion.apis.flask_api: Got data and status code (200) 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.607418 connexion.apis.flask_api: Got data and status code (200) 
Jun 05 10:26:54 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:54.606676 connexion.apis.flask_api: Getting data and status code 
Jun 05 10:26:55 7e657f1c-ad44-404f-9b89-f69f5b94446a mozilla/release-services/production/treestatus/api: 2019-06-05 14:26:55.011700 connexion.apis.flask_api: Getting data and status code