#3060: make rtw file executable

Author: mo-tgeddes

esmvaltool/utils/recipe_test_workflow/recipe_test_workflow/app/install_cold/bin/install_cold.sh

@@ -16,6 +16,7 @@ mkdir "${TARGET_DIR}"
 
 # Copy the environment file to the 'bin' directory.
 cp "${SOURCE_PATH}" "${TARGET_DIR}/${ENV_FILE}"
+chmod u+x "${TARGET_DIR}/${ENV_FILE}"
 
 # Remove the ESMValTool and ESMValCore directories, if they exist.
 if [[ -d ${ESMVALTOOL_DIR} ]]; then