Issue #748: support for Vagrant >= 1.3.0

- since Vagrant 1.3.0 the removed options are no longer available
- see https://github.com/mitchellh/vagrant/blob/master/CHANGELOG.md#130-september-5-2013
Issue #749: upgrade to yum cookbook v3.x

- yum cookbook v3.x contains breaking changes
- yum::epel was extracted into a separate cookbook yum-epel
- message was "RecipeNotFound: could not find recipe epel for cookbook yum"
Issue #750: fixed NoMethodError accessing node["monitoring"]["configs"]

- NoMethodError: undefined method `[]' for nil:NilClass recipes/default.rb:100
- http://stackoverflow.com/questions/19290710/ruby-syntax-in-chef-recipe
Merge branch 'yum-cookbook-3.x-support'
Merge branch 'attributes-fix'
not using 'wget' anymore to get remote files

- useful for boxes without wget installed
Merge branch 'wget-replacement'