public Builder dynamicProvisioning(boolean enabled, boolean allowHostSharing) {
            return zone(new Zone(Cloud.builder()
                                      .dynamicProvisioning(enabled)
                                      .allowHostSharing(allowHostSharing)
                                      .build(),
                                 SystemName.defaultSystem(),
                                 Environment.defaultEnvironment(),
                                 RegionName.defaultName()));
        }
Returns the hosts from the input list which are not retired
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/provisioning/ProvisioningTester.java