Fix ansible-lint test failures for cinder

With the merge of https://review.openstack.org/520177 in the
tests repo some ansible-lint failures which previously were
not being picked up are now detected.

Change-Id: I90d6673316b836b99bf792dd4586c69fd65af39c

test-setup-cinder-localhost.yml

@@ -22,31 +22,38 @@
         name: lvm2
       when:
         - ansible_pkg_mgr == 'apt'
+
     - name: Install lvm2 package
       package:
         name: lvm2
       when:
         - ansible_pkg_mgr in ['yum', 'dnf']
+
     - name: Create sparse Cinder file
-      shell: "truncate -s 10G /openstack/cinder.img"
+      command: "truncate -s 10G /openstack/cinder.img"
       args:
         creates: /openstack/cinder.img
       register: cinder_create
+
     - name: Get a loopback device for cinder file
-      shell: losetup -f
+      command: losetup -f
       when: cinder_create | changed
       register: cinder_losetup
+
     - name: Create the loopback device
-      shell: "losetup {{ cinder_losetup.stdout }} /openstack/cinder.img"
+      command: "losetup {{ cinder_losetup.stdout }} /openstack/cinder.img"
       when: cinder_create | changed
+
     - name: Make LVM physical volume on the cinder device
-      shell: "{{ item }}"
+      command: "{{ item }}"
       when: cinder_create | changed
       with_items:
         - "pvcreate {{ cinder_losetup.stdout }}"
         - "pvscan"
+
     - name: Add cinder-volumes volume group
       lvg:
         vg: cinder-volumes
         pvs: "{{ cinder_losetup.stdout }}"
       when: cinder_create | changed
+