Adjust relative paths for CSIT files

Remove leading test/csit/ from all relative paths to
accomodate the move into integration/csit repo.

Change-Id: Id9482b46df839f5eba28135e9f987a3eda1d7d94
Issue-ID: INT-671
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/scripts/run-instance.sh b/scripts/run-instance.sh
index 84ab343..7ccc895 100755
--- a/scripts/run-instance.sh
+++ b/scripts/run-instance.sh
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-# $1 docker image path under ${WORKSPACE}/test/csit/docker/
+# $1 docker image path under ${WORKSPACE}/docker/
 # $2 nickname for the instance
 # $3 docker run options, e.g. variables