public static Fixture.Builder fixture(ClusterResources min, ClusterResources now, ClusterResources max) {
        return new Fixture.Builder().initialResources(Optional.of(now)).capacity(Capacity.from(min, max));
    }
A provisioning tester which
- Supports dynamic provisioning (only).
- Optionally replicates the actual AWS setup and logic used on Vespa Cloud.
- Supports autoscaling testing.

TODO: All provisioning testing should migrate to use this, and then the provisioning tester should be collapsed
      into this.   ... or we should just use autoscalingtester for everything.

@author bratseth
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/provisioning/DynamicProvisioningTester.java