add only_active flag to GET /services/

does what it says on the tin

app/dao/services_dao.py

@@ -28,12 +28,17 @@ from app.models import (
 from app.statsd_decorators import statsd
 
 
-def dao_fetch_all_services():
-    return Service.query.order_by(
+def dao_fetch_all_services(only_active=False):
+    query = Service.query.order_by(
         asc(Service.created_at)
     ).options(
         joinedload('users')
-    ).all()
+    )
+
+    if only_active:
+        query = query.filter(Service.active)
+
+    return query.all()
 
 
 def dao_fetch_service_by_id(service_id):

app/service/rest.py

@@ -67,7 +67,7 @@ def get_services():
     elif request.args.get('detailed') == 'True':
         return jsonify(data=get_detailed_services())
     else:
-        services = dao_fetch_all_services()
+        services = dao_fetch_all_services(only_active=request.args.get('only_active') == 'True')
     data = service_schema.dump(services, many=True).data
     return jsonify(data=data)