[BUG] Name field appears in the attrs['cfg'] of the HDF5 output

[francois-drielsma]

Describe the bug
In the file['info'].attrs['cfg'] field of the output HDF5 files, there are spurious name attributes in each of the post blocks that do not appear in the original configuration, e.g.:

  topology_threshold:
    ke_thresholds:
      4: 50
      default: 25
    name: !!python/object/apply:numpy.core.multiarray.scalar
    - !!python/object/apply:numpy.dtype
      args:
      - U18
      - false
      - true
      state: !!python/tuple
      - 3
      - <
      - null
      - null
      - null
      - 72
      - 4
      - 8
    - !!binary |
      dAAAAG8AAABwAAAAbwAAAGwAAABvAAAAZwAAAHkAAABfAAAAdAAAAGgAAAByAAAAZQAAAHMAAABo
      AAAAbwAAAGwAAABkAAAA

To Reproduce
Run a SPINE .cfg files which contains a post-processor, and a write block, take a look at the output HDF5 file.

Expected behavior
This configuration should only contain keys which appear in the original configuration passed to SPINE.

Code base
Provide the following:

• SPINE release 0.1.0+ (generalized)