[ONOS-7668] Fix ansible scripts for Vagrant tutorial VM.

Change-Id: I8e063a0ef00c57c092b81eca6ac551964eba6372
diff --git a/tools/dev/vagrant/ansible/roles/tutorial-common/tasks/main.yml b/tools/dev/vagrant/ansible/roles/tutorial-common/tasks/main.yml
index 6ef9430..cf69af9 100644
--- a/tools/dev/vagrant/ansible/roles/tutorial-common/tasks/main.yml
+++ b/tools/dev/vagrant/ansible/roles/tutorial-common/tasks/main.yml
@@ -126,6 +126,8 @@
   file:
     path: "/home/{{ item.value.user }}/Desktop"
     state: directory
+    owner: "{{ item.value.user }}"
+    group: "{{ item.value.user }}"
     mode: 0755
   with_dict: "{{ tutorials }}"
 
@@ -279,4 +281,4 @@
       Comment[en_US]=
       Terminal=true
       X-KeepTerminal=true
-  with_dict: "{{ tutorials }}"
\ No newline at end of file
+  with_dict: "{{ tutorials }}"