[Travis] Use `build-for-testing` and `test-without-building` build actions
[Travis] Use `build-for-testing` and `test-without-building` build actions

This should stabilize running iOS and tvOS tests on Travis with Xcode 8.

ratkins/Result,antitypical/Result,antitypical/Result,ratkins/Result,antitypical/Result,ratkins/Result