[VOL-3717] sudo is not required for OLT reboot

Change-Id: I45ec806a342ff0e1fe28baa697612a70b30a2c2f
diff --git a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
index 56c66f4..52982f5 100755
--- a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
+++ b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
@@ -144,7 +144,7 @@
         ${olt_serial_number}=    Get From Dictionary    ${list_olts}[${I}]    sn
         ${olt_device_id}=    Get OLTDeviceID From OLT List    ${olt_serial_number}
         Run Keyword If    ${has_dataplane}    Login And Run Command On Remote System
-        ...    sudo reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
+        ...    reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
         Run Keyword And Ignore Error    Collect Logs
     END
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
diff --git a/tests/dt-workflow/Voltha_DT_MultiOLT_Tests.robot b/tests/dt-workflow/Voltha_DT_MultiOLT_Tests.robot
index 408ec42..497aa9e 100644
--- a/tests/dt-workflow/Voltha_DT_MultiOLT_Tests.robot
+++ b/tests/dt-workflow/Voltha_DT_MultiOLT_Tests.robot
@@ -81,7 +81,7 @@
     ${olt_serial_number}=    Get From Dictionary    ${list_olts}[0]    sn
     ${olt_device_id}=    Get OLTDeviceID From OLT List    ${olt_serial_number}
     Run Keyword If    ${has_dataplane}    Login And Run Command On Remote System
-    ...    sudo reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
+    ...    reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
     # validate that the ONUs on the other OLTs are still functional
     Verify ping is successful for ONUs not on this OLT     ${num_all_onus}    ${olt_device_id}
     Run Keyword And Ignore Error    Collect Logs
diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index 9889db8..027fd3b 100644
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -155,7 +155,7 @@
         ${olt_serial_number}=    Get From Dictionary    ${list_olts}[${I}]    sn
         ${olt_device_id}=    Get OLTDeviceID From OLT List    ${olt_serial_number}
         Run Keyword If    ${has_dataplane}    Login And Run Command On Remote System
-        ...    sudo reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
+        ...    reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
     END
     Run Keyword And Ignore Error    Collect Logs
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
diff --git a/tests/functional/Voltha_MultiOLT_Tests.robot b/tests/functional/Voltha_MultiOLT_Tests.robot
index 90ccadd..37b3f36 100644
--- a/tests/functional/Voltha_MultiOLT_Tests.robot
+++ b/tests/functional/Voltha_MultiOLT_Tests.robot
@@ -80,7 +80,7 @@
     ${olt_serial_number}=    Get From Dictionary    ${list_olts}[0]    sn
     ${olt_device_id}=    Get OLTDeviceID From OLT List    ${olt_serial_number}
     Run Keyword If    ${has_dataplane}    Login And Run Command On Remote System
-    ...    sudo reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
+    ...    reboot    ${olt_ssh_ip}    ${olt_user}    ${olt_pass}   prompt=#
     # validate that the ONUs on the other OLTs are still functional
     Verify ping is successful for ONUs not on this OLT     ${num_all_onus}    ${olt_device_id}
     Run Keyword And Ignore Error    Collect Logs