AXON-199 Update Disruptor dependency

Updated Disruptor dependency from com.googlecode.disruptor:disruptor:2.10.3 to
   com.lmax:disruptor:3.2.0.
Removed use of ClaimStrategy, SingleThreadedClaimStrategy, and MultiThreadedClaimStrategy
   and replaced them with single-threaded and multi-threaded ProducerType.
Removed claimStrategy from DisruptorConfiguration and replaced with bufferSize and
   producerType.
Removed parseClaimStrategy method from DisruptorCommandBusBeanDefinition and replaced
   with parseProducerType method.
Replaced ClaimStrategyFactoryBean with ProducerTypeFactoryBean.