Additional parameters that were set in a property are not respected

Issue

There is a property placeholder being used to set a bean configuration (database endpoint as example) and additional parameters that were set for it does not seem to be respected.

A property could be defined as following:

db.url = jdbc:mysql://some_host:some_port/some_schema?characterEncoding=UTF-8&characterSetResults=UTF-8&autoReconnect=true&zeroDateTimeBehavior=convertToNull

In that case auto reconnect will not happen.

It does not matter how a property value has been specified, using external property files (Config Admin in standalone mode) or using PID in profiles (Fabric mode), tt would lead to the issue in both cases.