[FrameworkBundle] Pretty Ppint json ouput of yaml:lint command
minor #10081 [FrameworkBundle] Pretty Ppint json ouput of yaml:lint command (lyrixx)

This PR was merged into the 2.5-dev branch.

Discussion
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[FrameworkBundle] Pretty Ppint json ouput of yaml:lint command

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

Commits
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689e9bf [FrameworkBundle] Pretty Ppint json ouput of yaml:lint command