[3328] Updated Kea6 to support new values

Updated spec file and unit tests with new dhcp-ddns values:
server-ip, server-port, and max-queue-size

src/bin/dhcp6/dhcp6.spec

@@ -382,7 +382,7 @@
                 "item_name": "server-ip",
                 "item_type": "string",
                 "item_optional": true,
-                "item_default": "127.0.0.1",
+                "item_default": "::1",
                 "item_description" : "IP address of b10-dhcp-ddns (IPv4 or IPv6)"
             },
             {
@@ -392,6 +392,27 @@
                 "item_default": 53001,
                 "item_description" : "port number of b10-dhcp-ddns"
             },
+            {
+                "item_name": "sender-ip",
+                "item_type": "string",
+                "item_optional": true,
+                "item_default": "",
+                "item_description" : "IP address from which to send to b10-dhcp-ddns (IPv4 or IPv6)"
+            },
+            {
+                "item_name": "sender-port",
+                "item_type": "integer",
+                "item_optional": true,
+                "item_default": 0,
+                "item_description" : "port number from which to send to b10-dhcp-ddns"
+            },
+            {
+                "item_name": "max-queue-size",
+                "item_type": "integer",
+                "item_optional": true,
+                "item_default": 1024,
+                "item_description" : "maximum number of requests allowed in the send queue"
+            },
             {
                 "item_name": "ncr-protocol",
                 "item_type": "string",

src/bin/dhcp6/tests/config_parser_unittest.cc

@@ -3213,8 +3213,11 @@ TEST_F(Dhcp6ParserTest, d2ClientConfig) {
         "    \"subnet\": \"2001:db8:1::/64\" } ], "
         " \"dhcp-ddns\" : {"
         "     \"enable-updates\" : true, "
-        "     \"server-ip\" : \"192.168.2.1\", "
+        "     \"server-ip\" : \"3001::1\", "
         "     \"server-port\" : 777, "
+        "     \"sender-ip\" : \"3001::2\", "
+        "     \"sender-port\" : 778, "
+        "     \"max-queue-size\" : 2048, "
         "     \"ncr-protocol\" : \"UDP\", "
         "     \"ncr-format\" : \"JSON\", "
         "     \"always-include-fqdn\" : true, "
@@ -3245,8 +3248,11 @@ TEST_F(Dhcp6ParserTest, d2ClientConfig) {
 
     // Verify that the configuration values are correct.
     EXPECT_TRUE(d2_client_config->getEnableUpdates());
-    EXPECT_EQ("192.168.2.1", d2_client_config->getServerIp().toText());
+    EXPECT_EQ("3001::1", d2_client_config->getServerIp().toText());
     EXPECT_EQ(777, d2_client_config->getServerPort());
+    EXPECT_EQ("3001::2", d2_client_config->getSenderIp().toText());
+    EXPECT_EQ(778, d2_client_config->getSenderPort());
+    EXPECT_EQ(2048, d2_client_config->getMaxQueueSize());
     EXPECT_EQ(dhcp_ddns::NCR_UDP, d2_client_config->getNcrProtocol());
     EXPECT_EQ(dhcp_ddns::FMT_JSON, d2_client_config->getNcrFormat());
     EXPECT_TRUE(d2_client_config->getAlwaysIncludeFqdn());

src/bin/dhcp6/tests/fqdn_unittest.cc

@@ -109,7 +109,9 @@ public:
         D2ClientConfigPtr cfg;
 
         ASSERT_NO_THROW(cfg.reset(new D2ClientConfig(true,
-                                  isc::asiolink::IOAddress("127.0.0.1"), 53001,
+                                  isc::asiolink::IOAddress("::1"), 53001,
+                                  isc::asiolink::IOAddress("::"), 0,
+                                  1024,
                                   dhcp_ddns::NCR_UDP, dhcp_ddns::FMT_JSON,
                                   (mask & ALWAYS_INCLUDE_FQDN),
                                   (mask & OVERRIDE_NO_UPDATE),