Allow path prefix for non forge module repositories

[brianhks]

I've created a plugin for nexus to mimic a forge module repository. The problem is that the url paths (/v3/releases/...) are not off the root.

For example my base url is http://nexus_host:8081/nexus/service/siesta/puppetforge/puppet and I need the library to query http://nexus_host:8081/nexus/service/siesta/puppetforge/puppet/v3/releases/...

This change allows the user to specify a longer url that will prefix initial requests to the server.

[scotje]

It looks to me like just dropping the leading slash here will allow things to work without any other changes. path_prefix seems to get automatically set to / if the url_prefix doesn't include a path component.

[brianhks]

scotje, had a good comment and I tested it out so the last commit changes the code to be much simpler.

[scotje]

Nice! If you have a moment, it would be neat to have a simple unit test for path prefix support. Probably in spec/unit/forge/v3/base_spec.rb. If you don't have time, I should be able to write one and get this merged next week. Thanks!

[brianhks]

I'm a ruby noob. I couldn't figure out how to run the tests from rake so I avoided it.

[austb]

bundle exec rspec should do the trick if all the gems are installed correctly.

[austb]

@brianhks I'm going to close this and move to this PR. It's your code changes plus tests.

[brianhks]

Thanks, I would not have figured out how to create that test.