Switch from Force Tags to Test Tags

Force Tags is deprecated in Robot 7.0 and will eventually
warn and then after that stop working. Test Tags performs
the same function per docs.

Change-Id: I7cf305754b247b995a05d8da3b9de9ed613ecae2
Signed-off-by: Matt Fischer <matthew.fischer@hpe.com>
diff --git a/redfish/update_service/test_redfish_image_upload.robot b/redfish/update_service/test_redfish_image_upload.robot
index 19b4436..c0d2257 100644
--- a/redfish/update_service/test_redfish_image_upload.robot
+++ b/redfish/update_service/test_redfish_image_upload.robot
@@ -33,7 +33,7 @@
 Test Setup             Printn
 Test Teardown          Test Teardown Execution
 
-Force Tags             Redfish_Image_Upload
+Test Tags             Redfish_Image_Upload
 
 *** Variables ***
 ${timeout}             20