Convert search util test to mpi.

Fixes ufs-community#279.

tests/chgres_cube/CMakeLists.txt

@@ -80,11 +80,17 @@ add_mpi_test(ftst_program_setup
 add_executable(ftst_search_util
   "${CMAKE_SOURCE_DIR}/sorc/chgres_cube.fd/search_util.F90"
   ftst_search_util.F90)
-add_test(NAME ftst_search_util COMMAND ftst_search_util)
 target_link_libraries(
   ftst_search_util
   esmf
   MPI::MPI_Fortran)
 if(OpenMP_Fortran_FOUND)
   target_link_libraries(ftst_search_util OpenMP::OpenMP_Fortran)
 endif()
+
+# Cause test to be run with MPI. The search routine was
+# written to work on a single task. So set NUMPROCS to 1.
+add_mpi_test(ftst_search_util
+  EXECUTABLE ${CMAKE_CURRENT_BINARY_DIR}/ftst_search_util
+  NUMPROCS 1
+  TIMEOUT 60)