Use pipeline prefix

Change-Id: Ief2abe0f06601db61d92042d482195beb458cd72
diff --git a/mk-kubernetes-deploy-pipeline.groovy b/mk-kubernetes-deploy-pipeline.groovy
index 3595efb..25d3298 100644
--- a/mk-kubernetes-deploy-pipeline.groovy
+++ b/mk-kubernetes-deploy-pipeline.groovy
@@ -61,20 +61,20 @@
     }
 
     stage("Install core infra") {
-        installFoundationInfra(saltMaster)
-        validateFoundationInfra(saltMaster)
+        salt.installFoundationInfra(saltMaster)
+        salt.validateFoundationInfra(saltMaster)
     }
 
     stage("Install Kubernetes infra") {
-        installOpenstackMcpInfra(saltMaster)
+        salt.installOpenstackMcpInfra(saltMaster)
     }
 
     stage("Install Kubernetes control") {
-        installOpenstackMcpControl(saltMaster)
+        salt.installOpenstackMcpControl(saltMaster)
     }
 
     stage("Install Kubernetes compute") {
-        installOpenstackMcpCompute(saltMaster)
+        salt.installOpenstackMcpCompute(saltMaster)
     }
 
     //stage('Delete Heat stack') {