Fail suite if tarball path not set.

Resolves openbmc/openbmc-test-automation#1369

Change-Id: Ic7c79bf570d61ec4f6d910801f812d04e113c33a
Signed-off-by: Sivas SRR <sivas.srr@in.ibm.com>
diff --git a/lib/logging_utils.robot b/lib/logging_utils.robot
index 6d4f724..446bdd6 100644
--- a/lib/logging_utils.robot
+++ b/lib/logging_utils.robot
@@ -169,6 +169,7 @@
 
 Install Tarball
     [Documentation]  Install tarball on BMC.
-    Run Keyword If  '${DEBUG_TARBALL_PATH}' == '${EMPTY}'  Return From Keyword
+    Should Not Be Empty  ${DEBUG_TARBALL_PATH}
+    ...  msg=Debug tarball path value is required.
     BMC Execute Command  rm -rf /tmp/tarball
     Install Debug Tarball On BMC  ${DEBUG_TARBALL_PATH}