Fix Swift config for Ceilometer usage

Ceilometer filter was previously removed from the Swift
configuration to avoid useless Ceilometer logs in the Swift
ones. This was fixed by setting only warning log level for
this Ceilometer part of the pipeline to keep only important
ones.

Change-Id: I8c41355bb98dbf3bb59ec792221b05ea936086b7
Partial-Bug: #1294789
Switch to Fedora-x86_64-20-20140618-sda

The heat-slow job using the Fedora-20 image as L2 guest, the
currently used version is affected by the heartbleed issue and
the Mb-Bios bug issue observed with emulation.

This version of the  Fedora cloud image uses the no_timer_check
kernel parameter, which solves the MP-Bios Bug issue.

The Image tested with ~3000 heat-slow job, without any issue.

Change-Id: I9ce9b7769c2d91e630b0362f2c2c6ac9066defbc
Closes-Bug: #1312199
Closes-Bug: #1297560
Add libyaml-devel package dependancy

Without libyaml-devel package installed (on Fedora-20),
running ./stack throws:

  [. . .]
  build/temp.linux-x86_64-2.7/check_libyaml.c:2:18: fatal error: yaml.h:
  No such file or directory #include <yaml.h> ^ compilation terminated.

  libyaml is not found or a compiler error: forcing --without-libyaml
  [. . .]

Adding this dependency to files/rpms/general resolves it. Also added to
files/apts/general.

Change-Id: If1aa23bf3fc76ea2b321c3725dd07050ddd4b825
Only enable auth_token in swift with keystone

We don't need to enable auth_token in pipeline when we don't have
keystone enabled.

Change-Id: I4695817766fc39fcceed32f71156d4123d5bdfa1
Adds support for multi-region

Change-Id: Ib85fe7cb375692b04aca4c46f61ba7e1fbfa501b
Implements: blueprint multi-region
Avoid huge libvirtd.log files on Ubuntu hosts

The libvirt log filter settings match against the filename of
the libvirt source emitting the log message. Normally these
file names are relative to the source tree root, but in the
Ubuntu binary packages these have somehow ended up as absolute
filenames from the OS root. This means that a log filter of
'1:libvirt' which is only intended to match src/libvirt.c
will in fact match every single file. This caused enourmous
log files on Ubuntu hosts running the gate.

The fix is to use '1:libvirt.c' as a more specific filename
match, but we can't do this unconditionally because libvirt
>= 1.2.3 does not use filenames for log filter matching
anymore. So only change the match on Ubuntu hosts for now,
since that's where the original problem lies.

While doing this, also turn off the logging of object ref
and unref operations, since those pollute the logs with lots
of noise.

Change-Id: I71b67507a4e68a7bff0c358857aaaac08ef0c420
Merge "Switch to Fedora-x86_64-20-20140618-sda"
Add ability to enable OSprofiler

To enable OSprofiler we should be able to add "profiler" notification
topic to ceilometer notification topics.

More about OSprofiler:
https://github.com/stackforge/osprofiler

More about ceilometer plugin:
https://review.openstack.org/#/c/100239/

Sample of trace (via Cinder and Nova Services):
http://pavlovic.me/rally/profiler/

Change-Id: I6137174a3ecddd58f62e0f98b235b71b1c070f13
Install oslo.i18n from source

Add a step to install oslo.i18n from source.

Change-Id: Ie041d4b82ca75a1c2ff99563a7a87447adc57ad2
Merge "Add ability to enable OSprofiler"
Merge "Add libyaml-devel package dependancy"
Fixed tunnel ranges variable inconsistency.

Change-Id: I7108a3ebd597e1dc808917be9213457df2322100
Generate recent changes list from git log

The list of recent commits to the DevStack repo is now generated
by tools/build_docs.sh from the last 6 month of the git log.

Change-Id: Idefdb5d5188ab7e743af131e3d6cb132382d25d4
Merge "Only enable auth_token in swift with keystone"
Merge "Install oslo.i18n from source"
Revert "Add missing config option os_auth_url"

This reverts commit 524bbed05ce9de0bd711aa18c35afa4476978404.

Change-Id: I0dc3ec7a55cb65bd2a5ff76f32b3d99f8962597b
Merge "Adds support for multi-region"
Merge "Fixed tunnel ranges variable inconsistency."
Update Apache + mod_wsgi deployment mechanisms

Added a global toggle for enabling HTTPD + mod_wsgi for services
that default deploy to running under Apache. When the variable
``ENABLE_HTTPD_MOD_WSGI_SERVICES`` is set to ``True`` any service
that recommends deploying under HTTPD + mod_wsgi, will be run
under Apache.

If ``ENABLE_HTTPD_MOD_WSGI_SERVICES`` is set to ``False`` the
any service that is defaulted to running under HTTPD + mod_wsgi
will (if capable) be run in an alternate deployment strategy (e.g.
eventlet).

Updated Swift and Keystone to have individual toggles for deploying
under HTTPD + mod_wsgi. This is done to allow for gate to run on
the services under mod_wsgi where appropriate. Toggles are
``KEYSTONE_USE_MOD_WSGI`` and ``SWIFT_USE_MOD_WSGI`` and are both
defaulted to "False" (do not deploy under HTTPD + mod_wsgi).

Change-Id: Id3b121b8f1cde369d184b586e0d875bdbda34813
Merge "Avoid huge libvirtd.log files on Ubuntu hosts"