public int allocatePort(String suffix) {
        int got = host.allocateNetworkPort(service, suffix);
        ports.add(got);
        return got;
    }
API for allocating network ports
This class acts as a bridge between NetworkPortRequestor and HostPorts
for a single call to allocatePorts(), gathering the resulting port
allocations in a list of integers.

@author arnej
config-model/src/main/java/com/yahoo/vespa/model/PortAllocBridge.java