Instance.AccessIpV6 format isn't very useful

[schmidtw]

The Instance.AccessIpV6 format in go isn't very useful because it is wrapped with [ and ] values. This means I can't easily drop that value into route53 or other DNS providers without needing to add a fair bit of code to strip them.

Example of what it is today:

[2001:558:fffff:ffff:ffff:ffff:8951]

Instead the AccessIpV6 value would be more useful as:

2001:558:fffff:ffff:ffff:ffff:8951

[schmidtw]

In go here is some code that solves the issue - I'm not sure where to insert it since most of the code in the pulumi-openstack library appears to be generated from something.

// This fixes an issue where the IPv6 address is wrapped with [] that Route53
// doesn't like or want.
func fixIpv6Address(in pulumi.StringOutput) pulumi.StringOutput {
	return in.ApplyString(func(s string) string {
		s = strings.TrimPrefix(s, "[")
		s = strings.TrimRight(s, "]")
		return s
	})
}