add SplitRecord processor

[Thomas Bailet]

this processor takes 1 record in and gives n records out according to dynamic parameters

example conf

    - processor: split_record
      component: com.hurence.logisland.processor.SplitRecord
      configuration:
        # default false
        keep.parent.record: false 
        # default false, if false the new record_type will be the name of the dynamic property
        keep.parent.record_type: false
        # default true, if false the new record_time will is set to processing_time
        keep.parent.record_time: false
        # dynamic parameters 
        record_type1: fieldA, fieldB
        record_type2: fieldC
        record_type3: fieldA, fieldD

will give

R(record_time0, record_type0, record_id0, fieldA, fieldB, fieldC, fieldD)
=>
R1(record_time0, record_type1, record_id1, parent_record_id =record_id0, fieldA, fieldB)
R2(record_time0, record_type2, record_id2, parent_record_id =record_id0, fieldC)
R2(record_time0, record_type3, record_id3, parent_record_id =record_id0, fieldA, fieldD)