Issue #48 - Add 'rozo node config'

'rozo node config' display the system configuration
Once two volumes/exports holding each 4 storages and storaged listens to
3 interfaces, here's what it gives:

~~~~
rozo node config -E localhost'NODE: localhost':
- EXPORTD:
  - VOLUME:
    - volume 1:
      - cluster 1:
        - {sid 1: localhost}
        - {sid 2: localhost}
        - {sid 3: localhost}
        - {sid 4: localhost}
    - volume 2:
      - cluster 2:
        - {sid 1: localhost}
        - {sid 2: localhost}
        - {sid 3: localhost}
        - {sid 4: localhost}
  - EXPORT:
      vid: 1
      root: /srv/rozofs/exports/export_1
      md5: ''
      squota: ''
      hquota: ''
  - EXPORT:
      vid: 2
      root: /srv/rozofs/exports/export_2
      md5: ''
      squota: ''
      hquota: ''
- STORAGED:
  - INTERFACE:
    - {192.168.0.1: 41001}
    - {192.168.0.2: 41001}
    - {192.168.0.3: 41001}
  - STORAGE:
    - {'cid 1, sid 1': /srv/rozofs/storages/storage_1_1}
    - {'cid 1, sid 2': /srv/rozofs/storages/storage_1_2}
    - {'cid 1, sid 3': /srv/rozofs/storages/storage_1_3}
    - {'cid 1, sid 4': /srv/rozofs/storages/storage_1_4}
    - {'cid 2, sid 1': /srv/rozofs/storages/storage_2_1}
    - {'cid 2, sid 2': /srv/rozofs/storages/storage_2_2}
    - {'cid 2, sid 3': /srv/rozofs/storages/storage_2_3}
    - {'cid 2, sid 4': /srv/rozofs/storages/storage_2_4}
- ROZOFSMOUNT:
  - {node localhost: /srv/rozofs/exports/export_1}
  - {node localhost: /srv/rozofs/exports/export_2}
~~~~
Merge branch 'develop' of http://github.com/rozofs/rozofs into develop
remove those stupid useless tabulations