wsrep CMake Deprecation Warning

CMake Deprecation Warning at wsrep-lib/CMakeLists.txt:5 (cmake_minimum_required):

  Compatibility with CMake < 2.8.12 will be removed from a future version of

  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell

  CMake that the project does not need compatibility with older versions.

cmake_minimum_required (VERSION 2.8)