Use package module to install lvm2

The lvm2 package has the same name across supported distros so a single
package task can be used.

Change-Id: Ifbf648d3f3604ae3e727a853b512d5b34ba059ac

test-setup-cinder-localhost.yml

@@ -17,17 +17,9 @@
   hosts: localhost
   become: true
   tasks:
-    - name: Install lvm2 apt package
-      apt:
-        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
       command: "truncate -s 10G /openstack/cinder.img"