Update koha release . fix ci docker backend

docker-compose/ci.yml

 ---
 version: '2.1'
 
+networks:
+  backend:
+    driver: bridge
+
 services:
   koha_ci:
     container_name: koha_ci

docker-compose/docker-compose.env

 #export KOHA_RELEASE=17.11.04-06-11 # listhistory + deleteditems merge
-export KOHA_RELEASE=17.11.04-06-16 # DEPLOY listhistory + deleteditems + purresaker merge
+export KOHA_RELEASE=17.11.04-06-17 # DEPLOY listhistory + deleteditems + purresaker merge
 # KOHA_IMAGE_TAG is only used as basis for building koha_dev image
 export KOHA_IMAGE_TAG=844259af2eebd935b6b6fd6e14fd18dd5d0b9304
 export GITREF=$(git rev-parse HEAD)