private void addConfigDefinition(ConfigDefinitionKey key, File defFile) throws IOException {
        String payload = IOUtils.readFile(defFile);
        configDefinitions.put(key, new ConfigDefinition(key.getName(), payload.split("[\\r\\n]+")));
    }
A global pool of all config definitions that this server knows about. These objects can be shared
by all tenants, as they are not modified.

@author Ulf Lilleengen
config-application-package/src/main/java/com/yahoo/config/model/application/provider/StaticConfigDefinitionRepo.java