initial commit of a basic rolling upgrade guide, based on the lamp_haproxy example
flesh out the CI/CD and load balancer sections a bit
tweak some links and phrasing
Add guide_rax.rst
Merge branch 'rax-guide' of git://github.com/sivel/ansible into devel
Wrap lines a bit tighter for easier editing.
Some minor tweaks to make things a little more tutorial-like, moved credentials section up higher, etc.
Merge branch 'lamp_tutorial' of git://github.com/tgerla/ansible into devel
Some slight tweaks to the continuous delivery docs.
Various syntax and layout things, add Galaxy to docs
Remove quotes aroung etcd_url value

I get errors like this with etcd_url = 'http://127.0.0.1:4001':
urllib2.URLError: <urlopen error unknown url type: 'http>
Make sure action plugin copy cleans up tmp dir

The copy action plugin creates its own tmp dir for each file that it
copies to the target machine.  However, it does not clean up the
original tmp path it was given when run() is called.  This cleans up the
tmp path before it begins looping on source files.
Merge pull request #5384 from sfromm/cleantmpdir

Make sure action plugin copy cleans up tmp dir
minor typo fixes for the rolling update guide
Merge pull request #5385 from tgerla/docsfixes

minor typo fixes for the rolling update guide
Merge pull request #5382 from a-sk/devel

Remove quotes aroung etcd_url value
Update ansible.cfg

Lookup plugins do not warrant settings in ansible.cfg.
Update constants.py

Lookup plugins for optional web services do not warrant advertising in ansible.cfg.
Remove depedency of lookup plugin on setting in ansible.cfg
Missed prefixed variable attribute