Fix for HV-VES TA sunny scenario

Handle situation when the topic doesn't exist yet because it is created on kafka after 1st HV-VES message is sent

Issue-ID: INT-650

Change-Id: Ie95af8a02ce5cda703f1898cb5d7ece32262987b
Signed-off-by: marekpl <marek.pondel@nokia.com>
diff --git a/robot/resources/test_templates/hvves_template.robot b/robot/resources/test_templates/hvves_template.robot
index 682566f..5ee9a02 100644
--- a/robot/resources/test_templates/hvves_template.robot
+++ b/robot/resources/test_templates/hvves_template.robot
@@ -15,8 +15,9 @@
     [Arguments]     ${kafka_server}     ${kafka_port}   ${kafka_topic}
     [Teardown]      Close
     Connect Consumer    bootstrap_servers=${kafka_server}:${kafka_port}
-    ${msg_number}=      Get Number Of Messages In Topics    ${kafka_topic}
-    [Return]    ${msg_number}
+    ${status}   ${msg_number}=      Run Keyword And Ignore Error        Get Number Of Messages In Topics    ${kafka_topic}
+    Run Keyword If      '${status}' == 'FAIL'   Return From Keyword     0
+    Run Keyword If      '${status}' == 'PASS'   Return From Keyword     ${msg_number}
 
 Define WTP Protocol
     [Documentation]     Defines Wire Transfer Protocol.