[#2677] Ignore invalid renew-timer values

src/lib/dhcpsrv/dhcpsrv_messages.*
    DHCPSRV_CFGMGR_RENEW_GTR_REBIND - new message

src/lib/dhcpsrv/network.h
    Added Network::getLabel()

src/lib/dhcpsrv/parsers/base_network_parser.cc
    BaseNetworkParser::parseCommon() - log renew > rebind
    rather than throw

src/lib/dhcpsrv/parsers/dhcp_parsers.cc
    Subnet4ConfigParser::initSubnet() - removed duplicate timer check
    Subnet6ConfigParser::initSubnet() - removed duplicate timer check

src/lib/dhcpsrv/shared_network.h
    Added SharedNetwork4::getLabel()
    Added SharedNetwork6::getLabel()

src/lib/dhcpsrv/subnet.h
    Added Subnet::getLabel()

src/lib/dhcpsrv/tests/cfg_subnets4_unittest.cc
    TEST_F(Subnet4ParserTest, parseWithInvalidRenewRebind) - new test

src/lib/dhcpsrv/tests/cfg_subnets6_unittest.cc
    TEST_F(Subnet4ParserTest, parseWithInvalidRenewRebind) - new test

src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc
    Updated tests

1 files changed, 7 insertions, 0 deletions

diff --git a/src/lib/dhcpsrv/network.h b/src/lib/dhcpsrv/network.h
index c61720fa95..e5e0b90ca8 100644
--- a/src/lib/dhcpsrv/network.h
+++ b/src/lib/dhcpsrv/network.h
@@ -806,6 +806,13 @@ public:
     /// @return A pointer to unparsed network configuration.
     virtual data::ElementPtr toElement() const;
 
+    /// @brief Generates an identifying label for logging.
+    ///
+    /// @return string containing the label
+    virtual std::string getLabel() const {
+        return ("base-network");
+    }
+
 protected:
 
     /// @brief Gets the optional callback function used to fetch globally