Consider all modules

[RonnyPfannschmidt]

this pr is to make the plugin manager run consider_module on all modules registred as plugin

this is supposed to address #2391 in a more general manner
however after moving the trigger i get a lot of errors that are hard to comprehend because pytest-spagetti

[coveralls]

Coverage decreased (-0.01%) to 92.477% when pulling 8bcf88e on RonnyPfannschmidt:consider-all-modules into daca618 on pytest-dev:features.

[nicoddemus]

LGTM

[RonnyPfannschmidt]

@nicoddemus that it passes here is most interesting, i get failures locally

[nicoddemus]

It also passes for me locally:

  py27: commands succeeded
  py35: commands succeeded
  congratulations :)

[RonnyPfannschmidt]

passes on tox as well

[RonnyPfannschmidt]

after recreating my environment it seems to work

[coveralls]

Coverage decreased (-0.1%) to 92.346% when pulling a92e397 on RonnyPfannschmidt:consider-all-modules into daca618 on pytest-dev:features.