don't softcode http_agent

src/main/java/sensor2graph/Main.java

@@ -32,7 +32,6 @@ public class Main {
 	public static File geocoding_cache;
 	public static int concurrency;
 	public static int process_timeout_minutes;
-	private static String http_agent;
 	private static String neo4j_uri;
 	private static String influxdb_uri;
 	private static String influxdb_database_name;
@@ -187,9 +186,11 @@ public class Main {
 			System.exit(-1);
 		}
 		
-
-		Main.logger.fine("setting http_agent to: " + http_agent);
-		System.setProperty("http.agent", http_agent);
+		{
+			var http_agent = "Please/0.5";
+			Main.logger.fine("setting http agent to: " + http_agent);
+			System.setProperty("http.agent", http_agent);
+		}
 
 		Main.logger.fine("initializing neo4j driver.");
 		initialize_neo4j_driver();
@@ -226,7 +227,6 @@ public class Main {
 		csv_directory                 =         new File(config.getProperty("csv_directory"                ));
 		geocoding_cache               =         new File(config.getProperty("geocoding_cache"              ));
 		concurrency                   = Integer.parseInt(config.getProperty("concurrency"                  ));
-		http_agent                    =                  config.getProperty("http_agent"                   );
 		neo4j_uri                     =                  config.getProperty("neo4j_uri"                    );
 		archive_uri                   =                  config.getProperty("archive_uri"                  );
 		sensor_type_info              =                  config.getProperty("sensor_type_info"             );
@@ -255,7 +255,6 @@ public class Main {
 		defaults.setProperty("csv_directory",                 "data/csv_files/"                           );
 		defaults.setProperty("geocoding_cache",               "data/geocoding_cache/"                     );
 		defaults.setProperty("concurrency",                   "10"                                        );
-		defaults.setProperty("http_agent",                    "Please/0.5"                                );
 		defaults.setProperty("neo4j_uri",                     "bolt://localhost:7687"                     );
 		defaults.setProperty("archive_uri",                   "https://archive.sensor.community/"         );
 		defaults.setProperty("sensor_type_info",              "sensor_type_info.json"                     );