More tool test typing.

[jmchilton]

It looks like we were passing two ... fairly distinct classes of dictionaries to ToolTestDescription's constructor. This is likely the problem was the models for these APIs I was trying to include in the tool state branch. I think the biggest typing improvement here is just to pull those out into different methods and paths through the code. There is a lot of typing fixes here and elimination of cast calls that was forcing the typing system to gloss over the differences.

How to test the changes?

(Select all options that apply)

• This is a refactoring of components with existing test coverage.

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[mvdbeek]

Thank you!