Added delay after ONU adapter restart

Change-Id: I0064c6a8a870859fca9b8a197a865a219b229968
Signed-off-by: Guru <guruprasanna.st@radisys.com>
diff --git a/libraries/onu_utilities.robot b/libraries/onu_utilities.robot
index 0ebce4c..b05397c 100755
--- a/libraries/onu_utilities.robot
+++ b/libraries/onu_utilities.robot
@@ -179,6 +179,7 @@
     ${openonu_ready_ts}=    Get Pod Ready Timestamp by Label    ${namespace}    app    adapter-open-onu
     ${restart_duration}=    Subtract Date From Date    ${openonu_ready_ts}    ${previous_ready_ts}
     Should Be True     ${restart_duration}>0
+    Sleep    10s
     # delete the olt passed, if available (special feature)
     ${olt_to_be_deleted_device_id}=    Run Keyword IF  "${olt_to_be_deleted_sn}"!="${EMPTY}"
     ...    Get OLTDeviceID From OLT List    ${olt_to_be_deleted_sn}