Foreman » Installer

Add --detailed-exitcodes arg

refs #3272 - print new user/password after installation

Reuse color support from Kafo

Installer output now uses color scheme selected by user. Also we don't
have to check color configuration manually. HighLine is already set by
Kafo.

rely on the basename of the script so others can override the location

This change allows katello-installer to use its own configuration file
but re-use the logic contained within foreman-installer.

Fixes #3977 - Don't re-open a Highline colourscheme

Fixes #3610 - explains error detection problems

Fixes #3237 - add --reset-db-feature

Fixes #3238 - respect --no-colors option

Kafo 0.3.0 comaptibility fix

fixes 3209 - exit code only zero by default