Fix typo in Pepper related changes

- Fix typo in changes which inforcing to use Pepper
  instead of direct http requests.

Change-Id: I34a689d8c89b68b8a5cfa77a96bdfb2a1132d7f6
Closes-Bug: PROD-15207
diff --git a/mk-k8s-simple-deploy-pipeline.groovy b/mk-k8s-simple-deploy-pipeline.groovy
index aa81f5b..e88d482 100644
--- a/mk-k8s-simple-deploy-pipeline.groovy
+++ b/mk-k8s-simple-deploy-pipeline.groovy
@@ -72,7 +72,7 @@
     stage("Connect to Salt master") {
         saltMasterHost = openstack.getHeatStackOutputParam(openstackCloud, HEAT_STACK_NAME, 'salt_master_ip', openstackEnv)
         saltMasterUrl = "http://${saltMasterHost}:8088"
-        python.setupPepperVirtualenv(venvPepper, saltMasterUrl, SALT_MASTER_CREDENTIALS)
+        python.setupPepperVirtualenv(pepperEnv, saltMasterUrl, SALT_MASTER_CREDENTIALS)
     }
 
     stage("Install core infra") {