[VOL-5584] Replace deprecated [Return] settings with RETURN across repository

Change-Id: Ia0231ed837c4407440fe93c6bf36c7a55edb7bea
Signed-off-by: Serkant Uluderya <serkant.uluderya@netsia.com>
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index e04554b..a79745d 100755
--- a/tests/dt-workflow/Voltha_DT_PODTests.robot
+++ b/tests/dt-workflow/Voltha_DT_PODTests.robot
@@ -963,4 +963,4 @@
         ${result_interval}=   Set Variable If   (${interval_upstream_bw_used} < 5000 or ${interval_upstream_bw_used} < 5000)
         ...    False    ${result_interval}
     END
-    [Return]     ${result_interval}
+    RETURN    ${result_interval}