Release 1.6.0
Fixes #7346 - Added OpenStack port 5000 via boolean

(cherry picked from commit 24a501be208460fdfd3bc59d47a4fd2b631df622)
refs #7388 - make foreman-selinux-enable upgrade-safe

(cherry picked from commit 2f345dec1a54d7af9a9454c903683198bcaa88f7)
fixes #7729 - allow websockify to read certs

(cherry picked from commit 01ba3e1e9d7b8fdd8d19514f616c04847f4f4d10)