add read only config (#267)

Author: a-s-g93

servers/neo4j-cypher/server.yaml

@@ -56,6 +56,9 @@ config:
     - name: NEO4J_RESPONSE_TOKEN_LIMIT
       example: "10000"
       value: '{{neo4j-cypher.response_token_limit}}'
+    - name: NEO4J_READ_ONLY
+      example: "false"
+      value: '{{neo4j-cypher.read_only}}'
 
   parameters:
     type: object
@@ -84,6 +87,8 @@ config:
         type: string
       server_allowed_hosts:
         type: string
+      read_only:
+        type: boolean
     required:
       - url
       - username