Secret properties don't override their plain counterpart

[rschwietzke]

Design spec says: Internally, you should in most cases not have to know that a certain property is secret. Hence a defined property secret.foobar is visible via the property API as secret.foobar and foobar. If a normal property foobar is set, the secret version overwrites it.

[rschwietzke]

To be precise, the secret cannot override it, it must remove it, otherwise we would leak the secret.

[rschwietzke]

The property is not accessible normally getProperty but still logged and in the properties when we iterate over. Regular access is not exposing it.

[rschwietzke]

If the secret defines key = value, any key that exists will be removed prior to adding the data from the secret. If we onyl set secret.key = value, we don't remove what is already in existence as key but cannot access it via the normal properties only when we get us a copy.