Include support for AddPathPlugin with just some configuration

[enekochan]

Q	A
Bug?	no
New Feature?	yes

Actual Behavior

I needed to add a base path for all the requests done with a specific client. Httplug has support for this feature with AddPathPlugin but the HttplugBundle does not include it AFAIK (as it does for AddHostPlugin). For now I've followed a similar solution as done in #110 (thanks @dbu BTW :D).

services:
    app.http.path_uri:
        class: Psr\Http\Message\UriInterface
        factory: ["@httplug.uri_factory", createUri]
        arguments: ["%acme_client.api_path%"]

    app.http.plugin.add_path:
        class: Http\Client\Common\Plugin\AddPathPlugin
        arguments: ["@app.http.path_uri"]

httplug:
    clients:
        acme:
            factory: 'httplug.factory.guzzle6'
            plugins:
                - 'app.http.plugin.add_path'

Expected Behavior

Be able to add a base path with just some configuration:

httplug:
    clients:
        acme:
            factory: 'httplug.factory.guzzle6'
            plugins:
                - add_path:
                    path: '%acme_client.api_path%'

Possible Solutions

Add AddPathPlugin to HttplugBundle similar to AddHostPlugin.

[enekochan]

I've just seen while updating my vendors that v1.9.0 includes base_uri option in 5ea9284 so I guess this is covered in a way with it.

[Nyholm]

That is true. But it would still be nice with support for the AddPathPlugin.

Thank you for this issue.

[dbu]

@enekochan do you want to do a pull request along the lines of 5ea9284 for the AddPathPlugin?