Fix cleanup task in Envoy.blade.php

Author: JanOppolzer

Envoy.blade.php

@@ -163,7 +163,7 @@
 
 @task('cleanup')
     cd {{ $dir }}
-    find . -maxdepth 1 -name "20*" | sort | head -n -3 | xargs rm -rf
+    find . -maxdepth 1 -name "makovec*" | sort | head -n -6 | xargs rm -rf
     echo "Cleaned up all but the last 3 deployments."
 @endtask