message: Adjust used instance types to instances with limit >=50
  We actually would like to use the m5.large up to m5.24xlarge
  but AWS is not easily willing to give us the increase without
  asking again and again and again for limit increases.
  Therefore we are switching to using c4 which have higher default limits
diff: @@ -11,16 +11,17 @@ from xain.ops.ec2 import user_data
  FLAGS = flags.FLAGS
  root_dir = project.root()
  -
  +# Note:
  +# We actually would like to use the m5.large up to m5.24xlarge
  +# but AWS is not easily willing to give us the increase without
  +# asking again and again and again for limit increases.
  +# Therefore we switches to using c4 which have higher default limits
  cores: Dict[int, str] = {
  - 2: "m5.large",
  - 4: "m5.xlarge",
  - 8: "m5.2xlarge",
  - 16: "m5.4xlarge",
  - 32: "m5.8xlarge",
  - 48: "m5.12xlarge",
  - 64: "m5.16xlarge",
  - 96: "m5.24xlarge",
  + 2: "c4.large",
  + 4: "c4.xlarge",
  + 8: "c4.2xlarge",
  + 16: "c4.4xlarge",
  + 32: "c4.8xlarge",
  }
  