NIFI-63: If MergeContent is set to defragment and we dont have enough fragments, consider this an error and route all FlowFiles for that bin to failure.
NIFI-181: Applied fix that is illustrated in ticket description. If calling LeakyBucketStreamThrottler's InputStream.read(byte[], int, int) and pass 0 as the length, it should just return 0
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-nifi into develop