OGC4AFC change id delimiter

connector-module-afarcloud/src/main/java/io/connector/module/afarcloud/gateway/OGCSensorThingsGateway.java

@@ -515,7 +515,7 @@ public class OGCSensorThingsGateway extends AbstractGateway {
 
     private static class Converter {
 
-        private static final String DELIMITER = String.valueOf(0x2b); //
+        private static final String DELIMITER = String.valueOf(0x1F); //
 
         static String assemblyId(String... parts) {
             return String.join(DELIMITER, parts);