Deprecated: Creation of dynamic property Optimizely\Utils\CustomAttributeConditionEvaluator::$logger is deprecated

[benschoch]

Description

There are (at least) 2 remaining deprecated definitions of dynamic properties, in OptimizelyConfigService and CustomAttributeConditionEvaluator.

All properties (at least outside of the tests) should use explicit property definition.

Benefits

Get rid of deprecation infos in runtime.