IBX-8534: Fixed VariationPathGenerator interface renaming Rector (#31)

For more details see https://issues.ibexa.co/browse/IBX-8534 and #31

Key changes:

* Fixed VariationPathGenerator interface replacement by using RenameClassRector

* Dropped obsolete ReplaceInterfaceRector

* [Tests] Aligned VariationPathGenerator replacement tests with the fix

Author: alongosz

src/contracts/Sets/ibexa-50.php

@@ -10,7 +10,6 @@
 
 use Ibexa\Rector\Rule\PropertyToGetterRector;
 use Ibexa\Rector\Rule\RemoveArgumentFromMethodCallRector;
-use Ibexa\Rector\Rule\ReplaceInterfaceRector;
 use Rector\Config\RectorConfig;
 use Rector\Renaming\Rector\ClassConstFetch\RenameClassConstFetchRector;
 use Rector\Renaming\Rector\MethodCall\RenameMethodRector;
@@ -204,10 +203,9 @@
     );
 
     $rectorConfig->ruleWithConfiguration(
-        ReplaceInterfaceRector::class,
+        RenameClassRector::class,
         [
-            'to_replace' => 'Ibexa\Bundle\Core\Imagine\VariationPathGenerator',
-            'replace_with' => 'Ibexa\Contracts\Core\Variation\VariationPathGenerator',
+            'Ibexa\Bundle\Core\Imagine\VariationPathGenerator' => 'Ibexa\Contracts\Core\Variation\VariationPathGenerator',
         ]
     );