Fix typo in salt models pipeline

Change-Id: I7c762544a46ba34350dc1202f0227ee21e685c0c
diff --git a/test-salt-model-node.groovy b/test-salt-model-node.groovy
index 8ec3936..1329f17 100644
--- a/test-salt-model-node.groovy
+++ b/test-salt-model-node.groovy
@@ -12,6 +12,7 @@
 
 def common = new com.mirantis.mk.Common()
 def gerrit = new com.mirantis.mk.Gerrit()
+def ssh = new com.mirantis.mk.Ssh()
 def saltModelTesting = new com.mirantis.mk.SaltModelTesting()
 
 def defaultGitRef = DEFAULT_GIT_REF