Resolve duplicate Windows Defender disabling

[jwmoss]

There are 2 places where we're disabling defender:

https://github.com/mozilla-platform-ops/ronin_puppet/blob/cloud_windows/provisioners/windows/azure/azure-bootstrap.ps1

https://github.com/mozilla-platform-ops/ronin_puppet/blob/cloud_windows/modules/roles_profiles/manifests/profiles/disable_services.pp

We need to disable it within the bootstrap script.

[markcor]

We should test and make sure the schedule task works in changing those reg values, and then if that is the case it should be in the schedule task and not the bootstrap script. The bootstrap script was a hacky way to get around an issue earlier on.