Description of problem:
Hosted-engine does not support IPv6 networking.
Currently, the IPv6 networking is disabled ONLY on the engine VM.
Thus, if the engine's DHCP reservation is for IPv6 address or the network support only ipv6 addresses the deployment will fail.
Steps to Reproduce:
1. deploy hosted-engine with default answers on a IPv6 network env (with no ipv4)
What are expected results for this IPv6 deployment?
Should the engine VM be configured only with IPv6?
Should all ha-hosts be configured only with IPv6?
Should there be any IPv4 addressing within the environment on engine or hosts?
*** This bug has been marked as a duplicate of bug 1618676 ***