Fix broken CI

Cleaned up imports in dqsegdb.apicalls

Simplified HTTP(S) GET requests using urllib

Fixed broken import in ligolw_segment_query_dqsegdb

Removed non-user-facing executables

Fix "puthon" typo

removed duplicates and unnecessaries, no functional changes

to provide X509 credential discovery methods. that package has minimal dependencies so doesn't add any burden on dqsegdb.

I broke it

this cleans up the distribution by removed some unneeded binaries. I suspect two of them are still useful from a publishing point-of-view, but can easily be recovered into a separate VCS for publishing.

Allow users to silence warnings from getDataUrllib2

Requiring Updated pyOpenSSL in setup.py only, to fix pip installations on systems where OpenSSL is more up to date.  CIT cluster is still running on pyOpenSSL 0.13.1, but the OpenSSL version is old enough that this still is functional, so we will not update the requirements in the RPM or Debian packaging files yet.

since they all raise an exception in the end anyway

WIP: Use six module to provide py3x compatibility

for python3 compatibility

Removed unused imports

Updated more exception syntax for python3

for python3 compatibility

Updated exception syntax for python3

for python3 compatibility

for python3 compatibility

allows building correct rpm in virtualenv

this change makes the DQSegDBInstall command a bit more standalone, and a bit more robust, by having it take care of appending the etc files to the data_files list itself, rather than having to manually specify them in the `setup()` call

Use pyOpenSSL instead of M2Crypto for X509 validation

don't use `sys.exit(1)`

M2Crypto isn't available for python3