Propagate ccache to kokkos build

Author: aobolensk

cmake/kokkos_config.cmake

@@ -11,6 +11,8 @@ ExternalProject_Add(
 
     CMAKE_ARGS
         -G "${CMAKE_GENERATOR}"
+        -DCMAKE_C_COMPILER_LAUNCHER=${CMAKE_C_COMPILER_LAUNCHER}
+        -DCMAKE_CXX_COMPILER_LAUNCHER=${CMAKE_CXX_COMPILER_LAUNCHER}
         -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
         -DCMAKE_INSTALL_PREFIX=${KOKKOS_INSTALL_DIR}