Configuration for storing indexes in Infinispan doesn't use the right default for 'cacheConfiguration'

The default value for the "/query/indexStorage/cacheConfiguration" field (when the "/query/indexStorage/type" field is set to "infinispan") is not correctly set. For example, if the "/cacheContainer" field for the top-level content storage points to a file, then the "/query/indexStorage/cacheContainer" should use the same value for the default.