Currently, Hudson project can be parameterized with string or file.

It would be great to have pre-defined list paremeter. A pick list for user to
select to avoid entering incorrect parameter.

Moreover, it is even better the list parameter can be changed according to the
user permssion.

e.g. A list paramter of "Environment" the valid values
are "SystemTest", "UserAcceptance" and "Production"

For those users, they only have permission to build the project but NOT config.
They should able to select "SystemTest" and "UserAcceptance"

For those users, they have permission to config the project should able to
select all possible values.

The use case is developer can build for all environemnts excepting production.
The production administrator can do production build. The
parameter "Environment" can drive the build to include JUnit testcases for non-
production environments.