SessionClient is subclassed from keystoneauth LegacyJsonAdapter.
LegacyJsonAdapter does not set the Content-Type explicitly
and results in decodeing issues in some cases.

Change-Id: Idf23022b394607c332490331fc4b216de6ff1313
Story: 2005237
Task: 30027
(cherry picked from commit bd33e310e09339a21097c66d4022538f6bcbad2f)

This commit was bulk generated and pushed by the OpenDev sysadmins
as a part of the Git hosting and code review systems migration
detailed in these mailing list posts:

http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003603.html
http://lists.openstack.org/pipermail/openstack-discuss/2019-April/004920.html

Attempts have been made to correct repository namespaces and
hostnames based on simple pattern matching, but it's possible some
were updated incorrectly or missed entirely. Please reach out to us
via the contact information listed at https://opendev.org/ with any
questions you may have.

This is a mechanically generated change to replace openstack.org
git:// URLs with https:// equivalents.

This is in aid of a planned future move of the git hosting
infrastructure to a self-hosted instance of gitea (https://gitea.io),
which does not support the git wire protocol at this stage.

This update should result in no functional change.

For more information see the thread at

 http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003825.html

Change-Id: I15a102aeedff37ea30d6803d20f2e47bed6f3f1c

Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as stable/stein branch, tests will
continue to use the upper-constraints list on master.

Change-Id: I9b4e2056aeb5a758e7c0950ea7677d1a86c21b73

Change-Id: I39ed7da4e520e2deaac38a285fcbb9cf777ab4a5

Change-Id: Ie217f622ec437efb772ccdb3ed65f1c5a04c8c7f