Remove the duplicate "become" for config-nova-fake.yml

Change-Id: I109d431eefa8725540b893b4dc61525b46b29c6a
Co-Authored-By: pippo <huang.zhiping@99cloud.net>

ansible/roles/nova/tasks/config-nova-fake.yml

@@ -41,7 +41,6 @@
     recurse: yes
     owner: "{{ config_owner_user }}"
     group: "{{ config_owner_group }}"
-  become: true
   with_sequence: start=1 end={{ num_nova_fake_per_node }}
   notify:
     - Restart nova-compute-fake containers