PBR 2.0.0 will break projects not using constraints

[Tony Breeds]

Any project not using constraints will see ContextualVersionConflict: (pbr 2.0.0.*) errors if they also use any library that has a defensive cap on pbr. So far that list is:

 sqlalchemy-migrate, yaql, requestsexceptions, pypowervm and jsonpath-rw-ext

but there may be others.

[Tony Breeds (o-tony)]

See:
 https://review.openstack.org/#/q/topic:bug/1668848
 https://github.com/powervm/pypowervm/pull/1
 https://github.com/sileht/python-jsonpath-rw-ext/pull/13

For fixes

[Tony Breeds (o-tony)]

logstash:
 http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22ContextualVersionConflict%3A%20(pbr%202.0.0%5C%22

[Tony Breeds (o-tony)]

better logstash:

 http://logstash.openstack.org/#dashboard/file/logstash.json?query=(message%3A%5C%22pkg_resources.VersionConflict%5C%22%20OR%20message%3A%5C%22ContextualVersionConflict%5C%22)%20AND%20message%3A%5C%22pbr%202.0.0%5C%22%20AND%20NOT%20build_name%3A%5C%22gate-requirements-tox-py27-check-uc-ubuntu-xenial%5C%22

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/441572

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/441572
Committed: https://git.openstack.org/cgit/openstack/tacker/commit/?id=13f4ff41d1d185509e33f74cd7fa8b2e41d72b82
Submitter: Jenkins
Branch: master

commit 13f4ff41d1d185509e33f74cd7fa8b2e41d72b82
Author: gong yong sheng <[e-mail]>
Date: Sat Mar 4 13:14:38 2017 +0800

    Sync test-requirements with global requirements

    In this patch, a tool is provided for team to do the sync to avoid
    any gaps with global requirements.

    Change-Id: Ie960eae7a2756aa0f267c8ad37ea60f5effe6742
    Partial-bug: 1668848

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rico Lin (<email address hidden>) on branch: master
Review: https://review.openstack.org/440470

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rico Lin (<email address hidden>) on branch: master
Review: https://review.openstack.org/440472

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/440231
Committed: https://git.openstack.org/cgit/openstack/castellan/commit/?id=a076657518b70deda12ec8c7e82504629d7e0c48
Submitter: Jenkins
Branch: master

commit a076657518b70deda12ec8c7e82504629d7e0c48
Author: Jeremy Liu <email address hidden>
Date: Thu Mar 2 17:04:26 2017 +0800

    Fix gate failure on pep8

    update test-requirements to match global requirements.

    Change-Id: Ic0d551db6235f4f27fece011132dbf5f1ead44e8
    Partial-Bug: #1668848

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/440234
Committed: https://git.openstack.org/cgit/openstack/python-barbicanclient/commit/?id=4ad8cfcd83383c5f59eeac4687c765d6d9b01690
Submitter: Jenkins
Branch: master

commit 4ad8cfcd83383c5f59eeac4687c765d6d9b01690
Author: Jeremy Liu <email address hidden>
Date: Thu Mar 2 17:07:10 2017 +0800

    Fix gate failure on pep8

    update test-requirements to match global requirements.

    Change-Id: I2b6c6dfc4ca5cf614319524bc1dad30b6b0a052c
    Partial-Bug: #1668848

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/440586
Committed: https://git.openstack.org/cgit/openstack/cloudkitty/commit/?id=45e2ccfdfdc6650fe2b13be6dd6d10273be4580d
Submitter: Jenkins
Branch: master

commit 45e2ccfdfdc6650fe2b13be6dd6d10273be4580d
Author: ricolin <email address hidden>
Date: Thu Mar 2 22:18:58 2017 +0800

    [Fix gate]Update test requirement

    Since pbr already landed and the old version of hacking seems not
    work very well with pbr>=2, we should update it to match global
    requirement.
    Partial-Bug: #1668848

    Change-Id: I1db16aa57df507352986f199260e2ba9e92e4605

[Matthew Thode (prometheanfire)]

I think this is fixed in most places, just waiting on a couple of projects to make pike releases.