Use replace regex when obfuscating data

[ivansenic]

As a result of discussions done in #556 we decided to ignore the replace regex for the data obfuscation. Any obfuscation simply returns *** for now. We need to find a meaningful and good balance between performance and this replace feature. We also need more input from the customers to learn what are the actual use-cases here.

If we decide eventually not to allow replace regex, in this ticket we should clean the code from the non-use replcaementRegex configuration option.