Lock our ansible version down to our own fork

This commit installs a version of ansible that we have curated with
specific commits.  Because ansible cannot be installed via a
requirements.txt file, a script was added to make this easier. As our
fork has the 'gather_facts: force' option, also enable this.
Add ansible 1.7.2-bbg to the requirements file

Thanks to @paulczar I am now adding our ansible fork to the
requirements file via tarball vs source. This is a much cleaner way
to go.
Merge pull request #677 from blueboxgroup/install-ansible

Lock our ansible version down to our own fork
Fix broken CI run

./bin/install_ansible is no longer here
Merge pull request #678 from blueboxgroup/install-ansible

Fix broken CI run
haproxy: log to /dev/log not localhost:514/udp
Merge pull request #679 from blueboxgroup/haproxy-logging

haproxy: log to /dev/log not localhost:514/udp
Set gather_facts on the plays that need it

Previously, I had set gather_facts on the common play only.  This
will work if one is running a full ansible run, but if you intend to
use tags, which target specific plays, then you need to set
gather_facts: force on each play that needs it.

The measure for which plays need it are those that make use of
hostvars[$host] type logic.  This commit will address those.
Merge pull request #681 from blueboxgroup/add-node

Set gather_facts on the plays that need it
percona-xtrabackup: Fix backup rotation
A recent change was breaking the crypto library on the python docker image.

Change to ubuntu with required packages.
Merge pull request #682 from blueboxgroup/fix/dockerfile

A recent change was breaking the crypto library on the python docker image
add global_proxy flag
Merge pull request #683 from blueboxgroup/global_proxy

add global_proxy flag
Allow for swift backed glance

This introduces a new bool, glance.store_swift. If this is true,
settings will be made to have glance store images in swift, under the
"glance" container. The container will be created upon first use so no
other setup is necessary.