Upping time for OLT reboot

Change-Id: I8061388c8216cab2f7e5f34be040e71e7d601614
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index ba7e395..1d62728 100644
--- a/tests/dt-workflow/Voltha_DT_PODTests.robot
+++ b/tests/dt-workflow/Voltha_DT_PODTests.robot
@@ -324,6 +324,7 @@
     Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s
     ...    Verify Device Flows Removed    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${of_id}
     Run Keyword and Ignore Error    Collect Logs
+    Sleep    180s
     # Recreate the OLT
     Setup
     Wait Until Keyword Succeeds    ${timeout}   2s    Perform Sanity Test DT
@@ -377,6 +378,7 @@
     Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s
     ...    Verify Device Flows Removed    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${of_id}
     # Re-do Setup (Recreate the OLT) and Perform Sanity Test DT
+    Sleep    180s
     Run Keyword    Setup
     Wait Until Keyword Succeeds    ${timeout}   2s    Perform Sanity Test DT
     Run Keyword If    ${has_dataplane}    Clean Up Linux