macOS requires the libxml2 library, not the xml2 CLI tool
macOS requires the libxml2 library, not the xml2 CLI tool

Fixes: ImportError: No module named ydk.ext.entity_utils

CiscoDevNet/ydk-gen,psykokwak4/ydk-gen,CiscoDevNet/ydk-gen,psykokwak4/ydk-gen,psykokwak4/ydk-gen,CiscoDevNet/ydk-gen,psykokwak4/ydk-gen,CiscoDevNet/ydk-gen,CiscoDevNet/ydk-gen,CiscoDevNet/ydk-gen,psykokwak4/ydk-gen