Optimize CI for latest builder farm configuration
Motivation: we've added hive-builder-4 (48 core 3960x) to the build farm, which leaves us with 4 total servers (other three servers are 8 and 12 core servers). We need to update the yaml file so that hived we use for testing will get built with hive-builder-4, since it builds about 3x faster than the other servers, which will enable us to start running tests much faster, and lower the overall build-and-test time.
Easiest way to do this is to tag that test node build job and hive-builder-4 with a tag like "hived-for-tests".