JwtVerifyHandler needs to handle properly the value returned by the Config module

[ddobrin]

The Handler, in isEnabled(), needs to handle the isEnabld flag regardless if it is returned as an Object or primitive boolean.

Change is:
@OverRide
public boolean isEnabled() {
Object object = config.get(JwtHelper.ENABLE_VERIFY_JWT);
return object != null && Boolean.valueOf(object.toString()) ;
}

[stevehu]

@ddobrin This is a very good catch. The old code is based on a very restricted assumption and is error-prone. If this works, we need to review other handlers as there are a lot of enabled flags. Also, we might need to review other data types other than strings. Thanks.

[stevehu]

JwtVerifyHandler needs to handle properly the value returned by the Config module