Fix ResolveHostToIpAddresses for Mono
Fix ResolveHostToIpAddresses for Mono

Mono does not support System.Net.IPAddress.IsIPv6Teredo. This maintains that host addresses are only IPv4, but does so using IPAddress.AddressFamily.
tausten/zookeeper,mikeqian/zookeeper,pengweiqhca/zookeeper,crtynes/zookeeper,tausten/zookeeper,pengweiqhca/zookeeper,crtynes/zookeeper,crtynes/zookeeper,Giten2004/zookeeper,mikeqian/zookeeper,crtynes/zookeeper,mikeqian/zookeeper,Giten2004/zookeeper,crtynes/zookeeper,tausten/zookeeper,Giten2004/zookeeper,tausten/zookeeper,tausten/zookeeper,ewhauser/zookeeper,Giten2004/zookeeper,crtynes/zookeeper,tausten/zookeeper,pengweiqhca/zookeeper,Giten2004/zookeeper,mikeqian/zookeeper,mikeqian/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,crtynes/zookeeper,pengweiqhca/zookeeper,mikeqian/zookeeper,tausten/zookeeper,mikeqian/zookeeper,Giten2004/zookeeper,Giten2004/zookeeper,pengweiqhca/zookeeper,mikeqian/zookeeper,crtynes/zookeeper,ewhauser/zookeeper,pengweiqhca/zookeeper,mikeqian/zookeeper,tausten/zookeeper,pengweiqhca/zookeeper,Giten2004/zookeeper,ewhauser/zookeeper,crtynes/zookeeper,Giten2004/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper,tausten/zookeeper,ewhauser/zookeeper,crtynes/zookeeper,tausten/zookeeper,pengweiqhca/zookeeper,Giten2004/zookeeper,ewhauser/zookeeper,mikeqian/zookeeper,ewhauser/zookeeper