macos ansible setup improvements

[mahdipub]

unixPB: This PR is amed to add Xcode_offline which installs xcode without need to use any other 3rd party resource. Also some minor code changes and improvement added (e.g. install brew)

Checklist

• commit message has one of the standard prefixes
• faq.md updated if appropriate
• other documentation is changed or added (if applicable)
• VPC/QPC not applicable for this PR

[karianna]

Some unhappy YAML lint

[sxa]

I've added a couple of other people as reviewers who are more knowledgeable about the macos stuff than I am but from a general perspective:

• At present we use the main.yml file for macos, so switching to use a separate one superficially feels like a slightly backwards step. Is it possible to integrate some of these changes into the normal execution of main.yml or is there a reason why you have chosen to do this as a separate top level file?
• This seems to have quite significant changes to some of the roles such as the ant-contrib one - are they specific to the goal of this PR to improve usability of the macos playbooks?
• Similarly this seems to change how things like the credentials are retrieved for the Jenkins_User role, which would be a change in behaviour.

Perhaps some of those things can be decoupled from this PR and proposed separately unless there is a reason they've all been put together.

[mahdipub]

I've added a couple of other people as reviewers who are more knowledgeable about the macos stuff than I am but from a general perspective:

• At present we use the main.yml file for macos, so switching to use a separate one superficially feels like a slightly backwards step. Is it possible to integrate some of these changes into the normal execution of main.yml or is there a reason why you have chosen to do this as a separate top level file?
• This seems to have quite significant changes to some of the roles such as the ant-contrib one - are they specific to the goal of this PR to improve usability of the macos playbooks?
• Similarly this seems to change how things like the credentials are retrieved for the Jenkins_User role, which would be a change in behaviour.

Perhaps some of those things can be decoupled from this PR and proposed separately unless there is a reason they've all been put together.

• Yes. This file (including comments on the bottom) is only to show what are changes, and how does this whole works for macos. For sure we can combine them.
• Yes. But at the same time they are general improvements in code and logic too. e.g in ant-contrib most of it is to introduce a new variable {{ ant_binary_file_name }} which lets avoid repetition of extracting the path every time we need.
• Agreed.
• Agreed. I can focus on xcode offline and then ask for the rest in separate PR.

[karianna]

@mahdipub Can you resolve the linter fixes?

[mahdipub]

Based on comments on slack, I will close this PR and split changes in 2~3 PRs. The one related to Xcode-offline and the other for brew is #3417.