[DepdencyInjection] forgot to add definition of dumped container member variable parameters
feature #9668 [DepdencyInjection] forgot to add definition of dumped container member variable parameters (cordoval)

This PR was squashed before being merged into the 2.5-dev branch (closes #9668).

Discussion
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[DepdencyInjection] forgot to add definition of dumped container member variable parameters

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #5408
| License       | MIT
| Doc PR        | n/a

this fixes the allowing of access to parameters property of the dumped container

Commits
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5b02d3f [DepdencyInjection] forgot to add definition of dumped container member variable parameters