updated route_factory service to use Pimple 2 factory method
bug #873 updated route_factory service to use Pimple 2 factory method (jkazimir)

This PR was squashed before being merged into the 2.0-experimental branch (closes #873).

Discussion
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updated route_factory service to use Pimple 2 factory method

Noticed odd behavior in mounted controller collection filters when playing with the v2 branch.  Traced it back to the route_factory not being a factory.

Cheers

Commits
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98071dc updated route_factory service to use Pimple 2 factory method