cleaning test env prior to 1st test case run

Change-Id: I75cbf29cd76766521f772b3b64281484f3f826b0
diff --git a/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot b/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
index 4a9246b..12359d8 100644
--- a/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
+++ b/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
@@ -51,7 +51,7 @@
     [Documentation]    Validates E2E Ping Connectivity and object states for the given scenario:
     ...    Configure whitelist with correct ONU location
     ...    Validate successful authentication/DHCP/E2E ping
-    [Setup]    None
+    [Setup]    Clean Up Linux
     [Tags]    test1
     Wait Until Keyword Succeeds    300s    15s    Validate ONU States    ACTIVE    ENABLED    ${src0['onu']}
     Wait Until Keyword Succeeds    60s    2s    Validate ATT Workflow Driver SI    ENABLED    AWAITING    ${src0['onu']}