[PLANE-7] Enable kiosk functionality on client

[janhalen]

Enable remote installation and autostart of browser client to support webbrowsing and display of webcontent.

• Add existing sh scripts @janhalen
• Port functionality from sh scripts to ansible playbooks
• Split up sh script functionality into roles
• Port and refactor 'create_user' functionality
• Port and refactor 'auto-login' functionality
  • Experiment with requirements.yml to use externally developed role
• Test and review the playbooks with the ported functionality

[janhalen]

Create user functionality has been changed to generate a random password for the user instead of the static password previously set inline in the script.

This improves security concerns as a static password is no longer used for all devices deployed with this method.

If there is a need for logging into the device directly for some manual local admins tasks, this needs to be set manually some way. But as it is now all remotely automated, I cant imagine what use case there would be for this.. Maybe im wrong?

Code comitted here in the issues feature branch: d3836ca