fixes #2523 - add missing require
(cherry picked from commit 7776616a6c34fba713ed4bfc6eff50d063b919d8)
fixes #2514 - lock minitest to 4.7
(cherry picked from commit 585e06c2fa2f8cc05879efb1bf33a1dc30c01b69)
fixes #2515 - rkerberos RPM required
(cherry picked from commit 7e6f5650ecdc805472a57a17be4e8da3f595e045)
fixes #2531 - support for scl-aware building, not SCL by default
(cherry picked from commit 2e10e585e00191b81a4bd2bdfa037b98b4d10144)
Add nonscl koji tags to build configuration
(cherry picked from commit e169d023eb10ca28e799ec78811d51187b868004)
fixes #2547 - fix ruby-abi on non-SCL EL6
(cherry picked from commit 3d41a1e12359a713633198d7dc52337bfb315fde)
Release 1.2.0-RC1