Improve the handling of unspecified configuration options in socketproxy apps
Start using our own changelog; Version bump v2.0.0
Updates kitchen cloud yaml

- Updates the Fedora 19 image
- Give ability to override EC2 Availability Zone with ENV
[COOK-4644] - add support to nginx::repo for Amazon Linux

Signed-off-by: Christopher Webber <cwebber@getchef.com>
[COOK-4658] - Nginx::socketproxy if the context is blank or nonexistant, the location in the config file has a double slash at the beginning

Signed-off-by: Christopher Webber <cwebber@getchef.com>
Version bump to 2.7.2
Publish 2.7.2 Changelog
Bump to 2.7.3 for Dev
Merge branch 'master' into integration (effectively merging
upstream/master)

Conflicts:
	CHANGELOG.md
	metadata.rb
	recipes/package.rb
Make log level configurable through attributes (and stop debug logging)
Merge branch 'evertrue/eherot/make_log_level_configurable' into integration

Conflicts:
	attributes/socketproxy.rb