Support TKLBAM on Ubuntu (and Ubuntu based distros)

[JedMeister]

The MVP is to ensure that it's installable on Ubuntu (and Ubuntu based distros). In the longer term it would be better to provide a proper Ubuntu repo. IMO we should only target LTS releases.

MVP: Get it installable
Steps:

• ensure ez-apt-install.sh works properly - this should be close - see Refactor ez-apt-install.sh to better support Ubuntu server tklbam#13
• build specific python-pycurl Ubuntu package (tklbam dep)
  • update bootstrap to build Ubuntu bootstrap - see Include basic Ubuntu support. bootstrap#7
  • update buildroot to build Ubuntu buildroot - looks like changes in common needed - see Refactor conf/bootstrap_apt for Ubuntu support common#227
  • publish python-pycurl package - see https://github.com/turnkeylinux/python-pycurl/releases/tag/7.43.0.2-2%2Bturnkey0%2Bubuntu0
• publish instructions to download and install - see above

Later: Ubuntu specific repo
Steps:

• ...