Modify the LC.java file,add the WebElement localtors.

Modify the Infrastructure.java file, add 4 test case methods.
Methods:
Infrastructure_NewEndpointVirtualvSphere
Infrastructure_NewNetworkProfile_ExternalIPRanges
Infrastructure_NewNetworkProfile_RoutedIPRanges
Infrastructure_NewNetworkProfile_PrivateDHCPEnabled

Modify the Infrastructure_testNG.xml file.