[depends] Allow PATH with spaces in directory names.

added test and update code based on feedback

ci/test/02_run_container.sh

@@ -70,7 +70,7 @@ if [ "$CI_OS_NAME" == "macos" ]; then
 fi
 
 CI_EXEC () {
-  $CI_EXEC_CMD_PREFIX bash -c "export PATH=${BINS_SCRATCH_DIR}:${BASE_ROOT_DIR}/ci/retry:\$PATH && cd \"${BASE_ROOT_DIR}\" && $*"
+  $CI_EXEC_CMD_PREFIX bash -c "export PATH=\"/path_with space:${BINS_SCRATCH_DIR}:${BASE_ROOT_DIR}/ci/retry:\$PATH\" && cd \"${BASE_ROOT_DIR}\" && $*"
 }
 export -f CI_EXEC