Update mount.sls

added the possibility to set the dump and pass option

dump
    The dump value to be passed into the fstab, Default is 0
pass_num
    The pass value to be passed into the fstab, Default is 0

linux/storage/mount.sls

   - mkmnt: True
   - opts: {{ mount.get('opts', 'defaults,noatime') }}
   {%- if mount.file_system == 'xfs' %}
+  - dump: {{ mount.dump|default('0', true) }}
+  - pass_num: {{ mount.pass_num|default('0', true) }}
   - require:
     - pkg: xfs_packages_{{ mount.device }}
   {%- endif %}