DataMunger - move attributes & run_list from a suite/platform.

This effectively will convert:

    ---
    platforms:
    - name: ubuntu-12.04
      run_list:
      - recipe[apt]
      attributes:
        one: two
        deep:
          p: 1
    suites:
    - name: server
      run_list:
      - recipe[foo]
      attributes:
        deep:
          s: 2

into:

    ---
    platforms:
    - name: ubuntu-12.04
      provisioner:
        run_list:
        - recipe[apt]
        attributes:
          one: two
    suites:
    - name: server
      provisioner:
        run_list:
        - recipe[foo]
        attributes:
          three: four

Since run_list and attributes are high-level are useful configuration
to manipulate, this behavior should be preserved and not deprecated.
But hey, no promises :)