Set reclassVersion to 1.5.4 in setupAndTestNode by default

Pin version in the setupAndTestNode to 1.5.4 by default, to unblock
reclass-system repo which will allow to add RECLASS_VERSION param to
test-mk-cookiecutter-templates job and override it explicitly there.

Change-Id: I1daec51b43e3017279401b925f71a6043218dd55
diff --git a/src/com/mirantis/mk/SaltModelTesting.groovy b/src/com/mirantis/mk/SaltModelTesting.groovy
index 665d0c6..a7688f0 100644
--- a/src/com/mirantis/mk/SaltModelTesting.groovy
+++ b/src/com/mirantis/mk/SaltModelTesting.groovy
@@ -20,7 +20,7 @@
  */
 
 def setupAndTestNode(masterName, clusterName, extraFormulas, testDir, formulasSource = 'pkg',
-                     formulasRevision = 'stable', reclassVersion = "master", dockerMaxCpus = 0,
+                     formulasRevision = 'stable', reclassVersion = "1.5.4", dockerMaxCpus = 0,
                      ignoreClassNotfound = false, legacyTestingMode = false, aptRepoUrl = '', aptRepoGPG = '', dockerContainerName = false) {
   // timeout for test execution (40min)
   def testTimeout = 40 * 60