Default install and upgrade to "Y" when no answer is given

[t-eckert]

Changes proposed in this PR:

• When a user is promped to install Consul, if they give no answer (e.g. just hit enter) the install will occur.

How I've tested this PR:

• Manually by running an install.

How I expect reviewers to test this PR:

• You may also run an install.

Checklist:

• Tests added
• CHANGELOG entry added

  HashiCorp engineers only, community PRs should not add a changelog entry.
  Entries should use present tense (e.g. Add support for...)

[wilkermichael]

Looks good! very minor comment

[jmurret]

Should uninstall and upgrade follow the same paradigm of "you typed this command so I am going to default to you wanted to do this" or are we leaving those with N as the default because there is more risk to those?

[wilkermichael]

Should uninstall and upgrade follow the same paradigm of "you typed this command so I am going to default to you wanted to do this" or are we leaving those with N as the default because there is more risk to those?

If the others switch behaviour, suggest baking logic into the Abort method and adding a unit test for the exported method

[t-eckert]

Should uninstall and upgrade follow the same paradigm of "you typed this command so I am going to default to you wanted to do this" or are we leaving those with N as the default because there is more risk to those?

I could see doing this for upgrade, but the convention is to only auto-yes for "additive" commands. I wouldn't do it for uninstall because it could be a footgun.

[david-yu]

Still waiting on @jmurret to review.

[jmurret]

looks good! 🙏