ConfigParser fails to parse some experiments

@dbeltran @mcastril

As a reference to this comment.

When using populate_details_db.py worker, some of the experiments are not being parsed. We did some debugging and we believe this is related to ConfigParser.

If we categories, there are 4 types of unique IOErrors:

Required file /appl/AS/AUTOSUBMIT_DATA/a04z/pkl/job_list_a04z.pkl not found.

[Errno 13] Permission denied: '/appl/AS/AUTOSUBMIT_DATA/a00x/conf/metadata'

Required folder /appl/AS/AUTOSUBMIT_DATA/a002/tmp not found.

[Errno 13] Permission denied: '/appl/AS/AUTOSUBMIT_DATA/a067/conf'

@dbeltran Please help us fix these errors so that we can ultimately proceed with testing_suite