Add Parameter.exclude and Parameter.mode to object model

[delatrie]

I'm submitting a ...

• bug report
• feature request
• support request => Please do not submit support request here, see note at the top of this template.

Motivation

The mode field is used to change the parameter's appearance in the report:

• mode == "masked" - show the parameter's value as ******.
• mode == "hidden" - don't show the parameter at all.

The exclude field allows the parameter to be ignored by the algorithm of mapping to a test case. Such a parameter isn't taken into account when Allure determines whether two test results actually correspond to a single test case.

Other information

historyId should also take into account all dynamically added parameters except those with exclude == true.

[pandoras-toolbox]

It would be nice if the masked value ****** would be configurable to a custom value.