Correct loopback IP from '120.0.0.1' to '127.0.0.1'

[monukoni]

Description

Changed ip address, that identify loopback interface

Testing & Reproduction steps

Links

https://developer.hashicorp.com/consul/docs/manage/dns/forwarding/enable#:~:text=to%20localhost%20and-,120.0.0.1,-in%20the%20configuration

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.

• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.

• If applicable, I've documented the impact of any changes to security controls.

  Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.

[hashicorp-cla-app]

All committers have signed the CLA.

[hashicorp-cla-app]

Thank you for your submission! We require that all contributors sign our Contributor License Agreement ("CLA") before we can accept the contribution. Read and sign the agreement

Learn more about why HashiCorp requires a CLA and what the CLA includes

_{Have you signed the CLA already but the status is still pending? Recheck it.}