generate ssh key pair

Change-Id: I9f7cbdb0ba9379eed262cc211a5eff2be5b05f8a
diff --git a/ansible/roles/fakeswitch/tasks/main.yml b/ansible/roles/fakeswitch/tasks/main.yml
index 39879e9..efddbf9 100644
--- a/ansible/roles/fakeswitch/tasks/main.yml
+++ b/ansible/roles/fakeswitch/tasks/main.yml
@@ -10,7 +10,7 @@
     path: "{{ item }}"
     owner: root
     group: root
-    mode: 0755
+    mode: "0755"
     state: directory
   with_items:
     - /mnt/flash2
@@ -23,7 +23,7 @@
     dest: /usr/bin/{{ item }}
     owner: root
     group: root
-    mode: 0755
+    mode: "0755"
   with_items:
     - persist
     - savepersist