bug #34577 [FrameworkBundle][Cache] Don't deep-merge cache pools conf…

…iguration (alxndrbauer)

This PR was squashed before being merged into the 4.4 branch (closes #34577).

Discussion
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[FrameworkBundle][Cache] Don't deep-merge cache pools configuration

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #34488
| License       | MIT

Prevents deep-merge of cache.pools configuration

Commits
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a0d6d30 [FrameworkBundle][Cache] Don't deep-merge cache pools configuration

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php

@@ -1014,6 +1014,7 @@ private function addCacheSection(ArrayNodeDefinition $rootNode)
                                 ->end()
                                 ->children()
                                     ->arrayNode('adapters')
+                                        ->performNoDeepMerging()
                                         ->info('One or more adapters to chain for creating the pool, defaults to "cache.app".')
                                         ->beforeNormalization()
                                             ->always()->then(function ($values) {