add packet test: LpPacketTest

src/main/java/component/HopLimit.java

@@ -13,6 +13,13 @@ public class HopLimit implements TlvComponentBase,InitialAble, IEncodingAble {
     // 成员变量
     private long hopLimit;
 
+    public HopLimit(){
+    }
+
+    public HopLimit(long hopLimit){
+        this.setHopLimit(hopLimit);
+    }
+
     // 成员函数
     public long getHopLimit() {
         return hopLimit;