Add Drivetrain node ssh credentials (lab)

These credentials are used by Deploy - TryMCP job
to send model to salt master (Drivetrain) node using rsync
("Send model to Salt master node" step in deploy-trymcp job).

Change-Id: Ibc6b82d57008126ffb657cd4a8147094dc77fe44
diff --git a/jenkins/client/credential/lab.yml b/jenkins/client/credential/lab.yml
new file mode 100644
index 0000000..68375e3
--- /dev/null
+++ b/jenkins/client/credential/lab.yml
@@ -0,0 +1,9 @@
+parameters:
+  _param:
+    lab_ssh_user: root
+  jenkins:
+    client:
+      credential:
+        lab:
+          username: ${_param:lab_ssh_user}
+          key: ${_param:cluster_private_key}