Don't sudo when saving container logs in registry test

We should not need elevated privileges for this.

Change-Id: Ie7eead23da925eceefaa8c7296bf5e63f9d1ea84

test-playbooks/registry/test-registry-post.yaml

@@ -4,7 +4,6 @@
       command: "docker ps -a --format '{{ '{{ .Names }}' }}'"
       register: docker_containers
       ignore_errors: true
-      become: true
 
     - name: Create container log dir
       file:
@@ -16,11 +15,9 @@
       shell: "docker logs {{ item }} &> {{ ansible_user_dir }}/zuul-output/logs/docker/{{ item }}.txt"
       args:
         executable: /bin/bash
-      become: true
 
     - name: Open container logs permissions
       file:
         dest: "{{ ansible_user_dir }}/zuul-output/logs/docker"
         mode: u=rwX,g=rX,o=rX
         recurse: yes
-      become: yes