Make keysum return None if not key_check (this case wasn't covered).

Added support for tagging subnets in ec2_vpc module

Add Amazon SNS notification plugin

Conflicts:
	library/packaging/apt_key

This simply adds --remote to the git submodule update command.
This means that if a branch is defined in .gitmodules then we should track said branch when updating.

Conflicts:
	library/system/lvg

Conflicts:
	library/cloud/ec2_vpc

Rename present to running, add new present state

Allow custom hipchat urls

Accept status code from a list of valid codes.

svr4pkg supports the -G switch for pkgadd

Scrub choices=BOOLEANS from remaining core module references.  Correct form in argument_spec is type='dict'.

New modules: rax_cbs and rax_cbs_attachments

Improvements to ec2 autoscaling modules

Allow state=absent for ec2_vol