Add convenience method for creating connections

Author: rbarbey

modules/jdbc/src/main/java/org/testcontainers/containers/JdbcDatabaseContainer.java

@@ -207,6 +207,17 @@ public Driver getJdbcDriverInstance() throws NoDriverFoundException {
         return driver;
     }
 
+    /**
+     * Creates a connection to the underlying containerized database
+     * instance without any parameters.
+     *
+     * @return a Connection
+     * @throws SQLException if there is a repeated failure to create the connection
+     */
+    public Connection createConnection() throws SQLException, NoDriverFoundException {
+        return createConnection("");
+    }
+
     /**
      * Creates a connection to the underlying containerized database instance.
      *