[DRE-maint] ruby-omniauth-cas3 is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-omniauth-cas3 1.1.4-1 is marked for autoremoval from testing on 2018-03-08

It (build-)depends on packages with these RC bugs:
888119: ruby-awesome-print: FTBFS on ruby2.5: test failure: colorization default