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/pldm/test_pldm_base.robot b/pldm/test_pldm_base.robot
index 67229af..e15b83f 100644
--- a/pldm/test_pldm_base.robot
+++ b/pldm/test_pldm_base.robot
@@ -8,7 +8,7 @@
 Test Setup       Printn
 Test Teardown    FFDC On Test Case Fail
 
-Force Tags       Pldm_Base
+Test Tags       Pldm_Base
 
 *** Test Cases ***
 Verify Get PLDM Types