Sync python-urllib3 1.15.1-2 (main) from Debian unstable (main)

Please sync python-urllib3 1.15.1-2 (main) from Debian unstable (main)

Explanation of the Ubuntu delta and why it can be dropped:
  * d/p/06_revert_square_brackets_httplib.patch: Cherry pick revert of
    change to behaviour with httplib which breaks IPv6 square bracket
    handling (LP: #1578351).
This cherrypicked change is now in the new upstream release present in Debian.

Changelog entries since current yakkety version 1.13.1-2ubuntu1:

python-urllib3 (1.15.1-2) unstable; urgency=medium

  * debian/patches/01_do-not-use-embedded-python-six.patch
    - Patch urllib3.contrib.appengine and dummyserver tests. (Closes: #825310)

 -- Daniele Tricoli <email address hidden> Thu, 26 May 2016 05:11:02 +0200

python-urllib3 (1.15.1-1) unstable; urgency=medium

  * New upstream release.
  * debian/control
    - Bump Standards-Version to 3.9.8 (no changes needed).
    - Add python{,3}-socks to Suggests.
  * debian/copyright
    - Update copyright years.
  * debian/patches/01_do-not-use-embedded-python-six.patch
    - Refresh.
  * debian/rules
    - Don't run contrib socks tests at build time.
    - Exclude GAE tests. (Closes: #825168)

 -- Daniele Tricoli <email address hidden> Tue, 24 May 2016 16:18:22 +0200