unixPb: Switch back to default xcode before running Macos playbook

[Haroon-Khel]

• commit message has one of the standard prefixes
• faq.md updated if appropriate
• other documentation is changed or added (if applicable)
• playbook changes run through VPC or QPC (if you have access)
• VPC/QPC not applicable for this PR
• for inventory.yml changes, bastillion/nagios/jenkins updated accordingly

ref #3249 (comment)

Brew update hits error if selected xcode is outdated

Error: Your Xcode (11.7 => /Applications/Xcode-11.7.app/Xcode.app/Contents/Developer) is too outdated.\n
Please update to Xcode 13.2.1 (or delete it).\nXcode can be updated from the App Store.\n
\nError: Your Command Line Tools are too outdated.\nUpdate them from Software Update in System Preferences.\n
\nIf that doesn't show you any updates, run:\n

[Haroon-Khel]

Works as expected https://awx2.adoptopenjdk.net/#/jobs/playbook/2137?job_search=page_size:20;order_by:-finished;not__launch_type:sync

Still hits an error that is accounted for in #3249 (comment) but the default command line tools xcode is selected before continuing

[Haroon-Khel]

ping @steelhead31 @sxa for review

[sxa]

Will this cause any problems on the first invocation of a playbook on a new machine (e.g. if xcode has not yet been installed)?

[Haroon-Khel]

Will this cause any problems on the first invocation of a playbook on a new machine (e.g. if xcode has not yet been installed)?

I'm certain command line tools gets installed when homebrew is installed, since we do not have a specific role for its install (the Xcode task installs xcode not command line tools)

https://mac.install.guide/commandlinetools/3.html#:~:text=If%20you%20haven't%20already,a%202021%20Mac%20M1%20Mini.

If you haven't already installed XCode Command Line Tools, you'll see a message that "The XCode Command Line Tools will be installed." Press return to continue when prompted by the Homebrew installation script.

So it makes sense to place the sudo xcode-select --switch / after the brew install