feat: Renaming master to main wherever it's referenced

[yhakbar]

Description

Fixes #1473.

Right before merging this, we'll need to explicitly perform the rename of the default branch from master to main in the GitHub repository settings.

This will ensure that all PRs get moved over to the new branch name, etc.

TODOs

Read the Gruntwork contribution guidelines.

• Update the docs.
• Run the relevant tests successfully, including pre-commit checks.
• Ensure any 3rd party code adheres with our license policy or delete this line if its not applicable.
• Include release notes. If this PR is backward incompatible, include a migration guide.

Release Notes (draft)

Updated default branch from master to main.

Migration Guide

If you have a locally cloned copy of Terratest, make sure to delete the master branch and check out the main branch.

[james03160927]

LGTM

[james03160927]

It seems like this change is breaking some unit tests.

• TestGitRefChecks/GetCurrentBranchNameReturnsBranchName
• TestGitRefChecks/GetCurrentBranchNameReturnsBranchName

Other failing tests don't seem to be related.

[yhakbar]

It seems like this change is breaking some unit tests.

• TestGitRefChecks/GetCurrentBranchNameReturnsBranchName
• TestGitRefChecks/GetCurrentBranchNameReturnsBranchName

Other failing tests don't seem to be related.

It seemed to me like the root cause of those failures was in itself the change in branch name. Is that assessment wrong?

[yhakbar]

If I'm not being clear, this line:
https://github.com/gruntwork-io/terratest/pull/1476/files#diff-61142d541db9ae6c5a711f72f57cf7c1c312cda26bf0e9a6d8d09e6188e83f11L32-R32

Won't work right now because the main branch doesn't exist. Once we rename master to main, it should.

[james03160927]

If I'm not being clear, this line: https://github.com/gruntwork-io/terratest/pull/1476/files#diff-61142d541db9ae6c5a711f72f57cf7c1c312cda26bf0e9a6d8d09e6188e83f11L32-R32

Won't work right now because the main branch doesn't exist. Once we rename master to main, it should.

If I'm not being clear, this line: https://github.com/gruntwork-io/terratest/pull/1476/files#diff-61142d541db9ae6c5a711f72f57cf7c1c312cda26bf0e9a6d8d09e6188e83f11L32-R32

Won't work right now because the main branch doesn't exist. Once we rename master to main, it should.

Ah you are right. LGTM then!

[james03160927]

LGTM