Improve the CI container setup.

+ Test jobs are fusioned with build jobs, this removes the need for artifacts
  which Ginkgo overuses and can speedup the build process.
+ No CUDA containers are upgraded to gcc 9.1 and llvm 8
+ New CUDA 10.1 container and related jobs are introduced.
+ Use tags to allow using the AMDCI system and track between CUDA and CPU
  requirements.

Author: Terry Cojean