fix soft reboot add alternate reason rebooting

Change-Id: I2d10163f456cf95e126beeca697409db6a5576c6
diff --git a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
index 53cffea..9f085d1 100755
--- a/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
+++ b/tests/openonu-go-adapter/Voltha_ONUStateTests.robot
@@ -426,7 +426,7 @@
         ${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