provide link to older docs when mentioning older docs

Add some FreeBSD facts

added:
 * ansible_distribution
 * ansible_distribution_release 
 * ansible_distribution_version
 * ansible_os_family
 * ansible_pkg_mgr
 * ansible_ssh_host_key_ecdsa_public

Also adds ECDSA public key for all plaforms.

Document: OpenStack inventory script needs grizzly

Add roles support for the script module

Adding monit module to start/stop/monitor/unmonitor process via monit

Pagerduty and Pingdom modules for core

Feature/document facts

Updated loop documentation with explicit example of hash usage

fix ambiguous use of automatically automatic in Roles docs

The OpenStack Inventory script uses the OS-EXT-IPS:type parameter
to distinguish between fixed and floating IP addresses.
This was only added in the Grizzly release, see
https://bugs.launchpad.net/nova/+bug/1117784

Specify in the docs that this inventory script requires Grizzly
or greater.

Previously setting force=no caused copy to subversively
fail when target did not exist on remote host.

Caused by Runner._remote_md5 returning 1
when files don't exist, rather than 0.

Modified assemble module so the dest file is streamed together rather than built-in memory before writing.

document in the man-page that {ansible,ansible-playbook} -M can also be ...

This plugin is not quite ready as it needs to support --host <hostname> and --list, like the other inventory plugins, but we should get this tweaked and include it once it is standardized.  Watch this space!

Vagrant external inventory plugin

Riak bugfixes

Defines memory and CPU facts:
- memfree_mb
- memtotal_mb
- swapfree_mb
- swaptotal_mb
- processor (a list)
- processor_cores
- processor_count
- devices

As a matter of fact, on NetBSD, it is possible to get memory, swap and
processor facts exactly as on Linux. Tested on NetBSD-5, NetBSD-6 and
NetBSD-6.1 (without Linux emulation).

Allow specification of erlang node name for rabbitmq_user/vhost/parameter actions.