Add CI testing for the native test server

[Spikhalskiy]

Is your feature request related to a problem? Please describe. We don't have CI testing for the native test server. As a result of that, we can release a version of SDK with a broken native test server build that affects users as it happened here: https://github.com/temporalio/sdk-java/issues/1357

Describe the solution you'd like Test Server should have some integration tests for the native test server image.