use new sdbus++ camelcase

Change I17a8d7479556596a3cf252b3f4eae9c8df547189 will change
how sdbus++ generates names which start with an acronym.
Prepare for this by keying off the SDBUSPP_NEW_CAMELCASE
define to use the new format.

Changes:
    dHCPEnabled -> dhcpEnabled
    dNSEnabled -> dnsEnabled
    iP -> ip
    iPAddress -> ipAddress
    iPv6AcceptRA -> ipv6AcceptRA
    mACAddress -> macAddress
    nICEnabled -> nicEnabled
    nTPEnabled -> ntpEnabled
    nTPServers -> ntpServers

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I35da2c4f8fc33262d6d096e499220419ebe4d00d
diff --git a/test/test_vlan_interface.cpp b/test/test_vlan_interface.cpp
index 85f4f40..740b6fd 100644
--- a/test/test_vlan_interface.cpp
+++ b/test/test_vlan_interface.cpp
@@ -103,7 +103,7 @@
     void createIPObject(IP::Protocol addressType, const std::string& ipaddress,
                         uint8_t subnetMask, const std::string& gateway)
     {
-        interface.iP(addressType, ipaddress, subnetMask, gateway);
+        interface.ip(addressType, ipaddress, subnetMask, gateway);
     }
 
     bool isValueFound(const std::vector<std::string>& values,