Update and publish E2E Yahoo UDF Test Script as wiki document

The E2E Yahoo UDF Test Script involves helping users understand and work with a custom translator as well as a User Defined Function.

Develop a Wiki article that walks a user through the setup, modeling and testing of this use-case.

Attached is the custom translator jar and the custom UDF jar.

Note for 8.3, the notion of UDF's are now confined to View models. See TEIIDDES-1973 and TEIIDDES-1974 for changes and tweak the E2E script to reflect these changes.