[VOL-3531] fix keyword for TT workflow

Change-Id: Ie387474d213183534d7681755360c0b6e2c06aa5
diff --git a/libraries/utils.robot b/libraries/utils.robot
index 967317b..ed9c252 100644
--- a/libraries/utils.robot
+++ b/libraries/utils.robot
@@ -313,7 +313,8 @@
     ...    ${src['ip']}    ${src['user']}    ${src['pass']}    ${src['container_type']}    ${src['container_name']}
     ...    ${dst['dp_iface_name']}    ${dst['ip']}    ${dst['user']}    ${dst['pass']}    ${dst['container_type']}
     ...    ${dst['container_name']}
-    Run Keyword IF    ${has_dataplane}    and    ${src['service_type']} != 'hsia'
+    Run Keyword IF    ${has_dataplane}
+    ...    ELSE IF    '${src['service_type']}'!='hsia'
     ...    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
     ...    Validate Subscriber DHCP Allocation    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${onu_port}
     ...    ${src['c_tag']}