[feature] Support ipv6 address.

[runkecheng]

Is your feature request related to a problem? Please describe.

127.0.0.1 in ipv6 is ::1, Xenon May use :: 1 to connect mysql instead of 127.0.0.1, so we also need to provide the default account of ::1.

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Additional context

[acekingke]

It Maybe donot set localhost in /etc/hosts, change it in sidecar.

[runkecheng]

https://stackoverflow.com/questions/30139358/changing-etc-hosts-with-sed-command