Added legacy testing mode switcher to test salt models pipeline

Change-Id: I4bcdf12298863b60303e9394bf1d216968e26982
diff --git a/test-salt-models-pipeline.groovy b/test-salt-models-pipeline.groovy
index 2b4e448..1fcf727 100644
--- a/test-salt-models-pipeline.groovy
+++ b/test-salt-models-pipeline.groovy
@@ -80,7 +80,6 @@
 
     stage("test-nodes") {
       if(checkouted) {
-
         def modifiedClusters = null
 
         if (gerritRef) {
@@ -148,7 +147,8 @@
               [$class: 'StringParameterValue', name: 'CREDENTIALS_ID', value: CREDENTIALS_ID],
               [$class: 'StringParameterValue', name: 'SYSTEM_GIT_URL', value: SYSTEM_GIT_URL],
               [$class: 'StringParameterValue', name: 'MAX_CPU_PER_JOB', value: MAX_CPU_PER_JOB],
-              [$class: 'StringParameterValue', name: 'SYSTEM_GIT_REF', value: SYSTEM_GIT_REF]
+              [$class: 'StringParameterValue', name: 'SYSTEM_GIT_REF', value: SYSTEM_GIT_REF],
+              [$class: 'BooleanParameterValue', name: 'LEGACY_TEST_MODE', value: LEGACY_TEST_MODE]
             ]}
           acc++;
         }