Move the test case of TC025 to the test cases folder

Change-Id: Ia3760a4fcc17f810940240d1778939333e8ffdc6
Signed-off-by: wym_libra <yimin.wang@huawei.com>
(cherry picked from commit c8ea364de2f2d7bb4703f4beb86897c23dc88c39)

diff --git a/samples/opnfv_yardstick_tc025.yaml b/tests/opnfv/test_cases/opnfv_yardstick_tc025.yaml
similarity index 100%
rename from samples/opnfv_yardstick_tc025.yaml
rename to tests/opnfv/test_cases/opnfv_yardstick_tc025.yaml