[Bug 1578102] Update Released

[James Page]

The verification of the Stable Release Update for keystone has completed
successfully and the package has now been released to -updates. In the
event that you encounter a regression using the package from -updates
please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1578102

Title:
  [SRU] Error: No such file or directory:
  '/etc/keystone/sso_callback_template.html'

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive mitaka series:
  Fix Released
Status in Ubuntu Cloud Archive newton series:
  Fix Released
Status in keystone package in Ubuntu:
  Fix Released
Status in keystone source package in Xenial:
  Fix Released

Bug description:
  Bug Description copied from :
  https://bugs.launchpad.net/keystone/+bug/1577666

  [Impact]

  The following error occurs when a user tries to login using Horizon
  Single Sign-On feature after the Idp authenticates the user and sends
  SAML assertion successfully :

  {"error": {"message": "An unexpected error prevented the server from
  fulfilling your request: [Errno 2] No such file or directory:
  '/etc/keystone/sso_callback_template.html' (Disable debug mode to
  suppress these details.)", "code": 500, "title": "Internal Server
  Error"}}

  [Test Case]

  I reproduced the above error while trying to configure Keystone for
  Federation taking TestShib.org as Idp and Keystone as SP.

  I am using Security Assertion Markup Language(SAML) for configuring
  Keystone for federation.

  The above error got fixed when I copied the sso_callback_template.html
  file to /etc/keystone directory.

  cp /opt/stack/keystone/etc/sso_callback_template.html /etc/keystone/

  I would recommend to add one more point(5) under Keystone changes as
  follows:

  5. Copy the sso_callback_template.html file to /etc/keystone/ directory:
  cp /opt/stack/keystone/etc/sso_callback_template.html /etc/keystone/

  in the following documentation(Setup Web Single Sign-On (SSO):

  http://docs.openstack.org/developer/keystone/federation/websso.html

  [Regression Potential]
  Minimal regression potential as we're just installing a new file in /etc/keystone/.

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