Clean nodes (#3282)

* Clean nodes

Author: rasapala

ci/build_test_OnCommit.groovy

@@ -47,9 +47,9 @@ pipeline {
             }
           }
         }
-        stage('Style, SDL and clean') {
+        stage('Style, SDL') {
           options {
-            timeout(time: 20, unit: 'MINUTES')
+                timeout(time: 20, unit: 'MINUTES')
           }
           parallel {
             stage('Style check') {
@@ -79,6 +79,25 @@ pipeline {
             }
           }
         }
+        stage('Cleanup node') {
+          options {
+              timeout(time: 30, unit: 'MINUTES')
+          }
+          agent {
+            label 'win_ovms'
+          }
+          steps {
+            script {
+                agent_name_windows = env.NODE_NAME
+                def windows = load 'ci/loadWin.groovy'
+                if (windows != null) {
+                    windows.cleanup_directories()
+                } else {
+                    error "Cannot load ci/loadWin.groovy file."
+                }
+            }
+          }
+        }
         stage('Build') {
           options {
             timeout(time: 4, unit: 'HOURS')