Quota/limit graphs now work in IE

IE has only parital support for html5 dataset. Here proposed solution
accesses the custom attributes via JQuery.

Fixes Bug #1195500

Change-Id: Ie1832db4671f5907d0cb0da50b0bbbd597f1b16d
emit warning while running flake8 without virtual env

run_tests.sh -N -p

It will call the flake8 installed on your host to detect PEP8, and
the flake8 plugin "OpenStack hacking" may not installed on your
host, so this command may not detect the OpenStack Style Commandment
supplied by hacking(e.g H202).

run_tests.sh -p
it will call the flake8 from virtual env, flake8 plugin "OpenStack
hacking" installed in virtual env will be triggered.

The result from "run_tests.sh -p" should be trusted, and jenkins uses
virtual env to run flake8 too.

When "-N" is enabled, check whether hacking can be imported, if not,
emit warning to stderr to remind user.

Test method
-----------
Suppose hacking is not installed on your host

$ ./run_tests.sh -p
no warning

$ ./run_tests.sh -p -N
emit warning

$ source .venv/bin/activate
$ ./run_tests.sh -p
no warning

$ ./run_tests.sh -p -N
no warning

Close-Bug #1215400

Change-Id: If5125c180a3ebea72dc1fb96817523a6e07b2d66
Sort tenants in tenant dropdown, per #1234993

Change-Id: I6e2fd3868ac3b0b0d1704bf034e6546726fda5c3
Closes-Bug: #1234993
Disable H803 check.

H803: Git commit title should not end with period.

I don't think we really care whether a commit title ends with a period
or not. Certainly not enough to warrant patches failing checks and
wasting people's time and CI resources.

Change-Id: I52fd73c35545943b1a7e2cec62ddb52a5f90a24b
Closes-bug: 1236621.
Fix rendering of Localized string on cell links

Change-Id: I0de0f5acb34976b7e17282ce4957625f01097b5d
Closes-bug: 1236611
Refactor horizon TemplateLoader

Here we can use `with` statement to keep
horizon code clean.

Change-Id: I98ffc3fbcb6892a3739f2de1936c54e868f8908f
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
LUKS quotas names easier to understand

Change-Id: I977d77d4360589bf335f7b036703e155088e0122
Closes-Bug: #1219085
Merge "Sort tenants in tenant dropdown, per #1234993"
Merge "Quota/limit graphs now work in IE"
Fix import keypair help text

The existing text was just copied from the create keypair view.

This commit adds a bunch more help text and instructions for creating
an SSH keypair from a terminal.

Change-Id: I43cb31ac0fcf46dbd1c607687810caf0e18ffde4
Closes-bug: #1237264.
Merge "Refactor horizon TemplateLoader"
Merge "Disable H803 check."
Merge "Fix import keypair help text"
Use "flavor details" rather than "flavor data"

Be consistent with views using either "details" or "information".

Change-Id: I7d69ffede8934f3130bb3fcd740b9ae8e8d5d4a6
Merge "Improve default logging configuration"
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
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
Merge "Fix rendering of Localized string on cell links"
Merge "capping python-troveclient version"