IPv6 support

[wh1ter4bb1t-js]

Add Support for IPv6 addresses

This PR addresses #1252.

This change tries to better generalize the host address in order to support both IPv4 and IPv6 address families

In this PR the debug workflows have changed in the following manner:

• When passing the full {host}:{port} path, the host can now utilize [::1] or any other IPv6 address
• The default cases will check if IPv4 or IPv6 is available:
  • if IPv4 is unavailable then the default host will be [::1]
  • if IPv4 is available or IPv6 is also unavailable the host will default back to 127.0.0.1

Nuances:

• getsockname will always return >= 2 (2 in the case of IPv4 and 4 in the case of IPv6) so to ensure that there is no complicated branching logic we always take a [:2] slice.
• since the majority of the cases that are being updated here is in order to replace 127.0.0.1 to either 127.0.0.1 or ::1 we opted to refer to the host when utilizing these values as localhost

[rchiodo]

/azp run

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[wh1ter4bb1t-js]

@microsoft-github-policy-service agree company="Google"

[rchiodo]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[rchiodo]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[rchiodo]

Looks good. Thanks for the submission.