use the common environment variable APP_CONFIG to load Flask configs

autoca/ca_app.py

@@ -97,7 +97,7 @@ def make_app(ca_instance, settings={}):
     app.register_blueprint(ca_app)
     if settings:
         app.config.update(settings)
-    app.config.from_envvar('CA_APP_SETTINGS', silent=True)
+    app.config.from_envvar('APP_CONFIG', silent=True)
     app.ca = ca_instance
     return app
 

autovpn/vpn_app.py

@@ -397,7 +397,7 @@ def new_cert_dl():
 def make_app(config={}):
     app = Flask(__name__)
     app.config.update(config)
-    app.config.from_envvar('VPN_APP_SETTINGS', silent=True)
+    app.config.from_envvar('APP_CONFIG', silent=True)
     app.signer = Signer(app.config['SIGNER_SECRET'])
     app.zipcache = ZipCache(app.config['CACHE_DIR'])
     app.register_blueprint(vpn_admin)