[5039] Failing unit-tests fixed

src/bin/dhcp4/tests/config_parser_unittest.cc

@@ -669,8 +669,9 @@ TEST_F(Dhcp4ParserTest, unspecifiedRenewTimer) {
     Subnet4Ptr subnet = CfgMgr::instance().getStagingCfg()->
         getCfgSubnets4()->selectSubnet(IOAddress("192.0.2.200"));
     ASSERT_TRUE(subnet);
-    EXPECT_TRUE(subnet->getT1().unspecified());
+    EXPECT_FALSE(subnet->getT1().unspecified());
     EXPECT_FALSE(subnet->getT2().unspecified());
+    EXPECT_EQ(900, subnet->getT1()); // that's the default value
     EXPECT_EQ(2000, subnet->getT2());
     EXPECT_EQ(4000, subnet->getValid());
 
@@ -705,7 +706,8 @@ TEST_F(Dhcp4ParserTest, unspecifiedRebindTimer) {
     ASSERT_TRUE(subnet);
     EXPECT_FALSE(subnet->getT1().unspecified());
     EXPECT_EQ(1000, subnet->getT1());
-    EXPECT_TRUE(subnet->getT2().unspecified());
+    EXPECT_FALSE(subnet->getT2().unspecified());
+    EXPECT_EQ(1800, subnet->getT2()); // that's the default value
     EXPECT_EQ(4000, subnet->getValid());
 
     // Check that subnet-id is 1