Colorize Neutron log output and refactor log setup code

Bug 1214616

This patch adds colors to on-screen Neutron log output in the same way nova,
cinder, and heat engine do.
To this aim, colorized logging configuration has been moved to ./functions.
The reason for this refactoring is that these instruction are the same or
very similar for each project, with the only exception of the target
configuration file.

Change-Id: Idf0d1b842bb9ab046c9ef826de1dfc55b3f1df9d
docker: ensure socat is installed

install_docker.sh failed for me because socat wasn't installed.  Add it
to this script since it expects it to be there.

Change-Id: Ic55f5e38de1b38bdd37407b7bec533d4c3eff2a9
xenapi: Use C locale

By exporting the LC_ALL=C we can get rid of localisation issues, as the
actual scripts are already assuming an english installation.

FIxes bug 1227527

Change-Id: Ieeebce4d53b09959146a970f3fb803201ac5ebdf
Fix LDAP support for openSUSE

Closes-Bug: #1227651
Change-Id: I1c55fbb2f65f882a0ae2bcf4767c0a3e0f0f47e7
Modified ceilometer alarm evaluator console script

Take account of the modification to the alarm evaluator
console script naming in the following commit:

  https://github.com/openstack/ceilometer/commit/bad5f18e

Change-Id: Ic7fc3b8ad7be9dd2a5b5ed3c07e169691229bb4d
Merge "Fix LDAP support for openSUSE"
Merge "xenapi: Use C locale"
Merge "docker: ensure socat is installed"
print out git references for trees

in order to be sure we understand the environment that's running
in an upstream test, print out the git information for the tree.
This will hopefully address questions of "which commit of tempest"
is being used for particular tests.

Change-Id: Ief4e8a17fd75945f02982d2adf8625fe927d823d
Clean up automated changes to requirements

Some of us like to reuse sandboxes, and keep them up to date.  This
is very difficult to do if devstack leaves modifications to
requirements.txt files after a run, since 'git pull' may refuse to
overwrite those changes.

This modification has devstack undo the changes to the requirements
files, to leave the sandbox in a clean state again.

Change-Id: Ia2d928ade8141b59b56a2c4548d760bf6911a3e5
Merge "Modified ceilometer alarm evaluator console script"
Fix swift httpd on fedora

Implements a fedora equivalent of ubuntu's sites-enabled and moves
enabling of mod_wsgi to the installation period so that it doesn't have
to be handled in a platform dependant way later.

Fixes: bug 1226363
Change-Id: I85325179f1792d985b0375572abfe8c8a82fecc3
make git show not display a diff

if the top commit includes actual content, this was being displayed
in the devstack log, which was just confusing. --quiet suppresses
this.

Change-Id: Id52604d3b2b9a1372746120cb5d8d741c35576b7
Merge "Colorize Neutron log output and refactor log setup code"
Merge "make git show not display a diff"
Merge "Clean up automated changes to requirements"