Normalize bools in tests. (#589)

tests/integration/targets/docker_swarm/tasks/cleanup.yml

@@ -7,7 +7,7 @@
   docker_swarm:
     state: absent
     force: true
-  ignore_errors: yes
+  ignore_errors: true
   register: leave_swarm
 
 - name: CLEANUP | Kill Docker and cleanup
@@ -15,7 +15,7 @@
   block:
     - name: CLEANUP | Kill docker daemon
       command: systemctl kill -s 9 docker
-      become: yes
+      become: true
 
     - name: CLEANUP | Clear out /var/lib/docker
       shell: rm -rf  /var/lib/docker/*
@@ -24,7 +24,7 @@
       service:
         name: docker
         state: started
-      become: yes
+      become: true
 
     - name: CLEANUP | Wait for docker daemon to be fully started
       command: docker ps