Fix ctest version detection logic, seem that CMake 2.4 don't have CMAKE_VERSION.
Fix ctest version detection logic, seem that CMake 2.4 don't have CMAKE_VERSION.

zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform