rocky upgrade path broken requirements pecan too low

[Tobias Urdin]

When upgrading to Rocky we noticed that the pecan requirement is:
pecan!=1.0.2,!=1.0.3,!=1.0.4,!=1.2,>=1.1.1 # BSD

https://github.com/openstack/neutron/blob/stable/rocky/requirements.txt#L11

But when having python2-pecan-1.1.2 which should satisfy this requirement we get below.
After upgrading to python2-pecan-1.3.2 this issue was solved.

2018-09-25 11:03:37.579 416002 INFO neutron.wsgi [-] 172.20.106.11 "GET / HTTP/1.0" status: 500 len: 2523 time: 0.0019162
2018-09-25 11:03:39.582 416002 INFO neutron.wsgi [-] Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/eventlet/wsgi.py", line 490, in handle_one_response
    result = self.application(self.environ, start_response)
  File "/usr/lib/python2.7/site-packages/paste/urlmap.py", line 203, in __call__
    return app(environ, start_response)
  File "/usr/lib/python2.7/site-packages/webob/dec.py", line 129, in __call__
    resp = self.call_func(req, *args, **kw)
  File "/usr/lib/python2.7/site-packages/webob/dec.py", line 193, in call_func
    return self.func(req, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/oslo_middleware/base.py", line 131, in __call__
    response = req.get_response(self.application)
  File "/usr/lib/python2.7/site-packages/webob/request.py", line 1313, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/site-packages/webob/request.py", line 1277, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/lib/python2.7/site-packages/webob/dec.py", line 129, in __call__
    resp = self.call_func(req, *args, **kw)
  File "/usr/lib/python2.7/site-packages/webob/dec.py", line 193, in call_func
    return self.func(req, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/oslo_middleware/base.py", line 131, in __call__
    response = req.get_response(self.application)
  File "/usr/lib/python2.7/site-packages/webob/request.py", line 1313, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/site-packages/webob/request.py", line 1277, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/lib/python2.7/site-packages/pecan/middleware/recursive.py", line 56, in __call__
    return self.application(environ, start_response)
  File "/usr/lib/python2.7/site-packages/pecan/core.py", line 835, in __call__
    return super(Pecan, self).__call__(environ, start_response)
  File "/usr/lib/python2.7/site-packages/pecan/core.py", line 677, in __call__
    controller, args, kwargs = self.find_controller(state)
  File "/usr/lib/python2.7/site-packages/pecan/core.py", line 853, in find_controller
    controller, args, kw = super(Pecan, self).find_controller(_state)
  File "/usr/lib/python2.7/site-packages/pecan/core.py", line 480, in find_controller
    accept.startswith('text/html,') and
AttributeError: 'NoneType' object has no attribute 'startswith'

[Tobias Urdin (tobias-urdin)]

This was the neutron-server package that was upgraded

[Slawek Kaplonski (slaweq)]

Looks like it's known bug in pecan and was fixed in version 1.3.2. It was reported also in bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1597622
I think we should bump required version of pecan to solve it.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/605027

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/605027
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=40ba4ebe6a56d786f6f42022e78dc6d4251d582c
Submitter: Zuul
Branch: master

commit 40ba4ebe6a56d786f6f42022e78dc6d4251d582c
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 25 11:57:01 2018 +0200

    Bump pecan version to 1.3.2

    In version 1.3.2 there is fix for issue which caused
    failure of start neutron-server process.
    Same issue was also reported in [1]

    [1] https://bugzilla.redhat.com/show_bug.cgi?id=1597622

    Change-Id: Iafe10b13ee729d781a79fcfa328521acfecdaec1
    Closes-Bug: #1794259

[Steve Langasek (vorlon)]

Hello Tobias, or anyone else affected,

Accepted neutron into cosmic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/neutron/2:13.0.0-0ubuntu4 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-cosmic to verification-done-cosmic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-cosmic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Launchpad Janitor (janitor)]

This bug was fixed in the package neutron - 2:13.0.0-0ubuntu4

---------------
neutron (2:13.0.0-0ubuntu4) cosmic; urgency=medium

  * d/control: Update min version of python(3)-pecan to rocky version
    (LP: #1794259).

 -- Corey Bryant <email address hidden> Tue, 25 Sep 2018 09:12:54 -0400

[Corey Bryant (corey.bryant)]

This bug was fixed in the package neutron - 2:13.0.0-0ubuntu4~cloud0
---------------

 neutron (2:13.0.0-0ubuntu4~cloud0) bionic-rocky; urgency=medium
 .
   * New update for the Ubuntu Cloud Archive.
 .
 neutron (2:13.0.0-0ubuntu4) cosmic; urgency=medium
 .
   * d/control: Update min version of python(3)-pecan to rocky version
     (LP: #1794259).

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 14.0.0.0b1 development milestone.