Improve default logging configuration

By default, a number of serious exceptions were not being
logged. Adding a logger for 'django'-related logs resolves this.

Also:
 - Add loggers for missing clients and django_openstack_auth
 - Add a default level for individual loggers (what makes it out to
   the log file remains determined by the handler configuration)

Change-Id: Id3478ac8ec79f22c19ef66e747f3701f98a36611
Closes-Bug: #1236423
(cherry picked from commit 3ccd927251a69905b2c3f1ee496c174eaeb1f8eb)
Import translations for Havana release

* Import translation update of 100% completed languages.
  12 translated languages are avaialable.
* Russian (ru) and Chinese Taiwan (zh_tw) newly completed their
  translations since RC1. They are added to the language list.
* Update POT files

This commit is directly proposed to milestone-proposed branch
because the master branch is already opened for Icehouse development
and the translatable strings are no longer same as those in Havana.

I believe it is the final import.

Change-Id: I9e8e7c28fae64f1aad7fbd5f226910fb9ee6a325
Closes-Bug: #1234317
capping python-troveclient version

Verson 1.0 of python-troveclient is not backwards compatible with
the trove work in Horizon. There are too many places to fix the
compatibility issues for Havana, so for now pinning the release
version.

Closes-bug: #1238121

Change-Id: If0ec929180e083aa47bdb688879ba2f63fdcd2a3
(cherry picked from commit b49b952be096c4d50228b5ca0dc40ad19e0211a6)
Add keystoneclient CredentialsManager if missing

The keystone v3 client doesn't include the 'ec2' manager, even
though the EC2 API is included in the default pipeline.

This commit creates the ec2 manager manually if it's missing
(and necessary). It uses the same call that the client itself
should have used.

Change-Id: I83e7bfa04cde5093c10bf2bc27af5ec03da4b48e
Closes-bug: #1236326
(cherry picked from commit 7187d12a1727b98e91c7d90941de6bd46f098809)
Merge "Improve default logging configuration" into milestone-proposed
Hide settings/change password on keystone v3

When using keystone v3, it was possible to change the user
password without knowing the old password.

Change-Id: I2e3721f9c8a1de4b9a5f85b230432844d2c83507
Closes-Bug: 1237989