[Piuparts-reports] detect_network_issues

[piuparts master]

Network problems on detected!
(By grep'ing for 'Cannot initiate the connection to', 'Failed to
fetch.*Could not resolve', 'Failed to fetch.*Something wicked
 happened resolving', 'Some index files failed to download',
'Hash Sum mismatch', and 'The following signatures were invalid'
in failed logs.)

The following logfiles have been deleted:

----------------------------------------------------------------------

removed `/org/piuparts.debian.org/master//wheezy/fail/python3-gdbm_3.2-4.log'