feat: adapt template to include trusted origins

See https://docs.pylonsproject.org/projects/pyramid/en/latest/_modules/pyramid/csrf.html#check_csrf_origin for details.

docker/pyramid.ini.j2

@@ -21,6 +21,7 @@ redis.sessions.prefix = {{ CW_INSTANCE }}:
 pyramid.includes =
   pyramid_redis_sessions
 {% endif %}
+pyramid.csrf_trusted_origins = {{ PYRAMID_CSRF_TRUSTED_ORIGINS }}
 
 [filter:cors]
 use = egg:wsgicors#middleware