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/openpower/ext_interfaces/test_vmi_multiple_interfaces.robot b/openpower/ext_interfaces/test_vmi_multiple_interfaces.robot
index c39497e..973f26f 100644
--- a/openpower/ext_interfaces/test_vmi_multiple_interfaces.robot
+++ b/openpower/ext_interfaces/test_vmi_multiple_interfaces.robot
@@ -10,7 +10,7 @@
 Suite Setup       Suite Setup Execution
 Suite Teardown    Run Keyword And Ignore Error  Suite Teardown Execution
 
-Force Tags        Vmi_Multiple_Interfaces
+Test Tags        Vmi_Multiple_Interfaces
 
 *** Variables ***