adding param to robot command to specify workspace_dir

Change-Id: I15d3b125cf8fc946792c000836ea42102ff4e0ed
diff --git a/seba-in-a-box/Makefile b/seba-in-a-box/Makefile
index e9c675a..f5899fa 100644
--- a/seba-in-a-box/Makefile
+++ b/seba-in-a-box/Makefile
@@ -278,7 +278,7 @@
 		WORKSPACE=$(VIRTUALENV) bash ./setup_venv.sh && \
 		source $(VIRTUALENV)/venv-cord-tester/bin/activate && \
 		cd Tests/WorkflowValidations/ && \
-		robot $(PYBOT_ARGS) --removekeywords wuks -e notready -i $(TESTTAGS) SIAB.robot
+		robot $(PYBOT_ARGS) --removekeywords wuks -e notready -i $(TESTTAGS) -v WORKSPACE_DIR:$(HOME) SIAB.robot
 	touch $@
 
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