Fix typo and test

Change-Id: I93e135a9366c1f7c93397dfa0c342428fb64eb1c

linux/storage/lvm.sls

     - require_in:
       - mount: {{ volume.mount.path }}
     {%- if not volume.mount.get('file_system', None) in ['nfs', 'nfs4', 'cifs', 'tmpfs', None] %}
-      - mkfs_{{ volume.mount.device}}:
+      - cmd: mkfs_{{ volume.mount.device}}
     {%- endif %}
     {%- endif %}
 

tests/pillar/storage.sls

           lv01:
             size: 5M
             mount:
-              path: /mnt
+              device: /dev/vg0/lv01
+              path: /mnt/lv01
+          lv02:
+            size: 5M
+            mount:
+              device: /dev/vg0/lv02
+              path: /mnt/lv02
+              file_system: ext4
+          lv03:
+            size: 5M
+            mount:
+              device: /dev/vg0/lv03
+              path: /mnt/lv03
+              file_system: xfs
     disk1:
       enabled: true
       device: /dev/loop_dev4