Add vhost Alias and Directory declarations

[Aethylred]

Sets up Alias declarations from a list of hashes.

Also sets up <Directory></Directory> blocks from a list of hashes.

[Aethylred]

Here's an example of this feature being used: https://github.com/nesi/puppet-gold/blob/master/manifests/install.pp#L219

[Aethylred]

Ok, I've added tests for Alias directives and Directory blocks (singular and multiple). Because I've substituted the default Directory block, many of the parameters have already been tested.

[hunner]

This is sweethotness :). Thanks for working on this! And adding tests, and using the $_* pattern, and preserving defaults, and documenting your new parameters, and having it pass lint!

[hunner]

Hmm. I'd love for this to be implemented as apache::vhost::alias and apache::vhost::directory defines... then we could also add things like apache::vhost::rewrite as per #187

[Aethylred]

Yes, I did think at the end that having these as defined resources would be better, but this works, and provides a model for the resources to follow. (and I need to get a better handle on virtual and exported resources...)

[hunner]

@Aethylred Is there a reason that path is a hash element instead of being a key to a hash? I don't think it's legal to have two <Directory> statements with the same directory-path.

[Aethylred]

hmm... so directories = { '/path/to/directory' => { ...hash of attributes }, }

No reason other than I've used lists longer than hashes.

[hunner]

Okay, thanks. Since this will make it into the 1.0.0 release I was just thinking about how I want the API to look.