Support installing in other Debian-derived systems

[bureado]

Problem Description

install.sh uses the output of lsb_release to imply an APT-based system before calling apt-get. It currently tests for Debian and Ubuntu, leaving other Debian-derived systems unsupported.

Batch Shipyard Version

Tested with latest.

Steps to Reproduce

Edit /etc/os-release and change the name of the distro (ID) to something arbitrary. Run install.sh again. The installer will exit.

Expected Results

Given all other dependencies are satisfied, I'd expect the installer to proceed.

Actual Results

The installer exits prematurely.