adjust default cpu and ram allocation ratios

As per support discussion, modify:

nova_cpu_allocation_ratio = 2.0
nova_ram_allocation_ratio = 1.0

Also add commented entry to user_variables to allow overriding
NFS client configuration for cinder

This change adds the NFS client configuration in the cinder_volume hosts,
necessary when using a netapp backend over NFS.
Refactor swift_rings.py ring builder

* Move the logic out into ansible/templates
* Let the ring_builder just build the ring based on a list of devices
* Allows us to not have to specify the storage/repl ip as long as the bridge is specified

Fixes #603
Improve container network descriptions

I improved the container network descriptions in the
rpc_user_config files.

Fixes rcbops/privatecloud-docs#736
Add F5 Monitoring Script

Adding the script that the F5 uses to properly monitor api pool members.

Issue #605
Merge pull request #613 from claco/issue-605

Add F5 Monitoring Script
Merge pull request #579 from mancdaz/master-470

adjust default cpu and ram allocation ratios
Merge pull request #612 from rcbops/msk/issue736

Improve container network descriptions
Merge pull request #604 from andymcc/ring_refactor

Refactor swift_rings.py ring builder
Allow empty storage policies to work

* If a storage policy is specified with no drives an empty ring will still be created
* Run a "write_ring" instead of a rebalance for empty rings.

Fixes #621
Merge pull request #622 from andymcc/empty_policy

Allow empty storage policies to work
Adjust default swift-proxy port to OpenStack default 8080

* Adjust proxy-server to use port 8080 by default
* Adjust haproxy plays to use the appropriate port for swift-proxy
* Move kibana haproxy port from 8080 to 8888
* Adjust MaaS plays to use port 8080 for swift-proxy monitoring

Fixes #609
Merge pull request #623 from andymcc/swift_proxy_port

Adjust default swift-proxy port to OpenStack default 8080
Set a default region to avoid 'no region' messages

* Use swift default region of 1

Fixes #595
Merge pull request #624 from andymcc/master

Set a default region to avoid 'no region' messages
Add the option for all users to create containers in Swift

* Create "swift_allow_all_users" var - default to False
* Adjust swift-proxy-server.conf based on this value
* If true add _member_ to allowed users.

Fixes #610
Setup glance to use swift as a backend

* Add the swiftoperator role
* Add the swiftoperator role to the glance user when glance is using swift

Fixes #610
Merge pull request #625 from andymcc/swift_user_perms

Swift user permissions changes.
Fix syntax error in swift-proxy-server.conf

* Missing end of line } causing errors

Fixes #626
Merge pull request #627 from andymcc/proxy_fix

Fix syntax error in swift-proxy-server.conf