[RFE][EmbeddedAnsible] Configurable verify_ssl for git repositories

[NickLaMuro]

Currently, verify_ssl is set to "false" for all GitRepository objects associated with EmbeddedAnsible:

https://github.com/ManageIQ/manageiq/blob/7ea2845fc/app/models/manageiq/providers/embedded_ansible/automation_manager/configuration_script_source.rb#L53-L79

It is assumed that it probably was just due to a first pass when implementing this originally:

#19027

Which allowed for the most permissive checks, if unfortunately less secure. Ideally this would be something that could be configured in the UI.

Adding a verify_ssl checkbox, and configuring the backend should be doable, and we most likely can default it to "unchecked" to retain the current functionality by default.

[NickLaMuro]

Fixed via #21298 and ManageIQ/manageiq-ui-classic#7768