Upgrade from 3.0.0-alpha.10 to 3.0.0-alpha.12

[Lazydog]

Upgrading LT v10 -> 11 Installer STOPS Issues

#1 add-apt-repository: command not found error in Ubuntu 18.04. Installer fails. Proposed Solution - add this at the top of the installer (I have reported this several times and repeatedly told it is in all versions of Ubuntu, but it is not). sudo apt-get install software-properties-common #2 Installer STOPS make[2]: Leaving directory ‘/root/libretime/legacy/locale’ make[1]: Leaving directory ‘/root/libretime/legacy’ make: Leaving directory ‘/root/libretime/legacy’ Install default Airtime…