Include common in system-reclass-pipeline

Change-Id: I09fc3f5b81e456c301377ccf0a186c172aa3c2ee
diff --git a/test-system-reclass-pipeline.groovy b/test-system-reclass-pipeline.groovy
index 559b891..6094b43 100644
--- a/test-system-reclass-pipeline.groovy
+++ b/test-system-reclass-pipeline.groovy
@@ -1,4 +1,5 @@
 def gerrit = new com.mirantis.mk.Gerrit()
+def common = new com.mirantis.mk.Common()
 
 def gerritCredentials
 try {