[ContainerBuilder] Fix calls method for lazy loading

Currently, when a definition is marked as lazy, if the definition has some calls methods, the lazy become useless because the object is created. We need to call this method lazily.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -
@Ocramius nope. Moving the initialization of methods would break things then if you remove it from there. this PR is just unnecessary