fix soft reboot add alternate reason rebooting

Change-Id: I631db1b1a32428da0bca3870eb93b053fa4832a9
diff --git a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
index 3b24008..32f04d5 100755
--- a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
+++ b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
@@ -492,7 +492,7 @@
         ${device_list}=    Catenate    ${device_list}    ${onu_device_id}
     END
     Reboot ONU    ${device_list}   False
-    ${alternativeonustates}=  Create List     stopping-openomci
+    ${alternativeonustates}=  Create List     stopping-openomci    rebooting
     Current State Test All Onus    omci-flows-deleted
     ...   ENABLED    DISCOVERED    UNREACHABLE    alternativeonustate=${alternativeonustates}
     Sleep    5s