add HDF5_STATUS attribute into file writing and run_or_skip() checking

[yunjunz]

Description of the desired feature

With the current version of HDF5 writing via writefile.layout_hdf5/write_hdf5_block(), the h5 file is complete even if the process is killed in the middle. This leads to a failed run_or_skip checking in the update_mode.

Describe the solution you'd like

Add a new attribute, called HDF5_STATUS, assign it to EMPTY in writefile.layout_hdf5() and change it to FULL in the last call of writefile.write_hdf5_block(). Then check this attribute in ut.run_or_skip().

To determine the last call of write_hdf5_block() automatically:

if not block or block[1::2] == ds.shape[1::2]:
    HDF5_STATUS = FULL
else:
    HDF5_STATUS = EMPTY