Add exit statement to the script

Author: ali-ince

test/resources/boltstub/v3/acquire_endpoints_no_writers.script

@@ -8,3 +8,4 @@ C: RUN "CALL dbms.cluster.routing.getRoutingTable($context)" {"context": {}} {}
 S: SUCCESS {"fields": ["ttl", "servers"]}
    RECORD [9223372036854775807, [{"addresses": [],"role": "WRITE"}, {"addresses": ["127.0.0.1:9005","127.0.0.1:9006"], "role": "READ"},{"addresses": ["127.0.0.1:9001","127.0.0.1:9002","127.0.0.1:9003"], "role": "ROUTE"}]]
    SUCCESS {}
+   <EXIT>