replace test 'wget' package with 'hello' package

Remove obsolete module development docs

In the route53 module, documenting that TXT and SPF values must be surrounded by quotes

must be surrounded by quotes.

Otherwise you get a cryptic error message from Route 53.

Allow custom nosetest parameters

The NOSETESTS variable can be used to support customizing the nosetests
parameters.  This allows providing custom nose parameters such as
--with-coverage.

Minor readme tweaks since I haven't edited this in a while.

Added ansible-vault to the installer

fix json typo in documentation

Various tests using datafiles are being moved into the integration test framework (tests_new right now).

The unit test infrastructure will remain for things that are mocked out and testable with out filesystem
side effects, and a few cases of things that might not be quite so much (like inventory) that can still
benefit from heavy access to the API.

See the 'tests_new/integration' directory, this will soon fold into tests_new.

we're a little further along the units directory will be reserved to pure-API tests.

We had some incorrect logic for when selinux is installed and disabled.