Simplify unit tests to be data-type tests only

[skeet70]

Test only what is translated from Scala to Java data types. Once switched over these tests can be run on CI because they won't need lib_ironoxide.so.

[ernieturner]

Actually do need the .so on Travis in order for any tests to work at all. So new goal is to place the .so in Travis but still just have unit tests and no calls through the entire SDK stack.