update testcase to support Docker Image Can Be Pulled With Credential

tests/resources/Docker-Util.robot

@@ -274,3 +274,17 @@ Docker Image Can Be Pulled
     END
     Run Keyword If  '${out[0]}'=='FAIL'  Capture Page Screenshot
     Should Be Equal As Strings  '${out[0]}'  'PASS'
+
+Docker Image Can Be Pulled With Credential
+    [Arguments]  ${server}  ${username}  ${password}  ${image}  ${period}=60  ${times}=2
+    FOR  ${n}  IN RANGE  1  ${times}
+        Sleep  ${period}
+        ${out}=  Run Keyword And Ignore Error  Docker Login  ${server}  ${username}  ${password}
+        Log To Console  Return value is ${out}
+        ${out}=  Run Keyword And Ignore Error  Docker Pull  ${image}
+        Log To Console  Return value is ${out[0]}
+        Exit For Loop If  '${out[0]}'=='PASS'
+        Sleep  5
+    END
+    Run Keyword If  '${out[0]}'=='FAIL'  Capture Page Screenshot
+    Should Be Equal As Strings  '${out[0]}'  'PASS'

tests/resources/TestCaseBody.robot

@@ -302,7 +302,8 @@ Body Of Replication Of Push Images to Registry Triggered By Event
     Select Rule  rule${d}
     ${endpoint_body}=  Fetch From Right  ${endpoint}  //
     ${dest_namespace}=  Set Variable If  '${provider}'=='gitlab'  ${endpoint_body}/${dest_namespace}  ${dest_namespace}
-    Run Keyword If  '${provider}'=='docker-hub' or '${provider}'=='gitlab'  Docker Image Can Be Pulled  ${dest_namespace}/${image}:${tag1}   times=6
+    Run Keyword If  '${provider}'=='docker-hub'  Docker Image Can Be Pulled  ${dest_namespace}/${image}:${tag1}   times=3
+    Run Keyword If  '${provider}'=='gitlab'  Docker Image Can Be Pulled With Credential  registry.gitlab.com  ${username}  ${pwd}  ${dest_namespace}/${image}:${tag1}   times=3
     Executions Result Count Should Be  Succeeded  event_based  1
     Go Into Project  project${d}
     Delete Repo  project${d}  ${image}