update-user-provided-service - Cloud Foundry CLI Reference Guide | 
   cf update-user-provided-service SERVICE_INSTANCE [-p CREDENTIALS] [-l SYSLOG_DRAIN_URL] [-r ROUTE_SERVICE_URL] [-t TAGS]
   Pass comma separated credential parameter names to enable interactive mode:
   cf update-user-provided-service SERVICE_INSTANCE -p "comma, separated, parameter, names"
   Pass credential parameters as JSON to create a service non-interactively:
   cf update-user-provided-service SERVICE_INSTANCE -p '{"key1":"value1","key2":"value2"}'
   Specify a path to a file containing JSON:
   cf update-user-provided-service SERVICE_INSTANCE -p PATH_TO_FILE
   cf update-user-provided-service my-db-mine -p '{"username":"admin", "password":"pa55woRD"}'
   cf update-user-provided-service my-db-mine -p /path/to/credentials.json
   cf create-user-provided-service my-db-mine -t "list, of, tags"
   cf update-user-provided-service my-drain-service -l syslog://example.com
   cf update-user-provided-service my-route-service -r https://example.com
URL to which logs for bound applications will be streamed
Credentials, provided inline or in a file, to be exposed in the VCAP_SERVICES environment variable for bound applications. Provided credentials will override existing credentials.
URL to which requests for bound routes will be forwarded. Scheme for this URL must be https
User provided tags