Added token provider for Symfony DI Container parameters

[dantleech]

Token provider which provides values from Symfony DI container.parameters.

Should we also support providing values from services?

stdClass:
    uri_schema: {base_path}/sub/path
    token_providers:
        base_path: [ container, [ parameter: "my.bundle.some.parameter" ]

[lsmith77]

there seems to be a BC break in 2.6 https://travis-ci.org/symfony-cmf/RoutingAuto/jobs/38961769

/cc @stof

[wouterj]

This is for 1.1, isn't it?

[dantleech]

@WouterJ yep

[lsmith77]

ping

[dantleech]

Do we agree this is a good idea?

I would further add a "service" key in addition to "parameter" and make the two mutually exclusive.

[dbu]

i guess that makes sense. i am not exactly following, lets just keep this at a sane level of complexity and then offer an event or callback or something for when the expression language reaches its limits.

[dantleech]

Updated, reduced the scope to only providing parameters. Services are a bit more involved and would require different configuration.

@WouterJ good with you?

[wouterj]

:+1:

we should not forget to update the bundle.