Add ec2_elb_lb for managing ELBs
Add health check parameter.
Initial commit of rax_dns module
Add state attribute to description
Remove errant raise
Initial commit of rax_dns_record
Add ec2_key module.
Minor typos and remove extra dependencies.
Bumped to v1.5
Attempt #2 to cause yum to fail on invalid url
Add module support for Rackspace Cloud Files Containers
Add rax_files_objects module for Rackspace Cloud Files support

This squashed commit fixed typos, changed to Py 2.4 compatible exceptions
Completed documentation and examples
Spiff up the 'Developing Plugins' page

* Add more cross-documentation references
* Fix some broken links
* Add links to github/source code references
keypair is not absolutely required when creating ec2 instances
Fail yum on invalid url with .rpm suffix
Allow keystring passed to authorized_key to contain blank lines and comments
Add support for Scientific Linux for hostname module

hostname module was lacking support for Scientific Linux, this commit adds it.
Fixes #5656 quote values with multiple columns before calling
the sysctl command. Calling sysctl should also not be true by default
Merge pull request #5655 from scottgilbert/devel

Allow keystring passed to authorized_key to contain blank lines and comments