public static ConfigurableResource parseResourceConfigValue(String value)
      throws AllocationConfigurationException {
    return parseResourceConfigValue(value, Long.MAX_VALUE);
  }
@Test
  public void testMemoryPercentageCpuAbsoluteCpuNegative() throws Exception {
    expectMissingResource("cpu");
    parseResourceConfigValue("50% memory, -2 vcores");
  }