[exporter] moved mergeBatchFunc and mergeBatchSplitFunc to request (#… #72

Job	Run time
contrib-tests-matrix (receiver-0)	7m 5s
contrib-tests-matrix (receiver-1)	8m 49s
contrib-tests-matrix (receiver-2)	8m 50s
contrib-tests-matrix (receiver-3)	8m 10s
contrib-tests-matrix (processor)	6m 28s
contrib-tests-matrix (exporter-0)	3m 9s
contrib-tests-matrix (exporter-1)	9m 22s
contrib-tests-matrix (extension)	6m 12s
contrib-tests-matrix (connector)	4m 32s
contrib-tests-matrix (internal)	7m 6s
contrib-tests-matrix (pkg)	3m 56s
contrib-tests-matrix (cmd-0)	45s
contrib-tests-matrix (cmd-1)	1m 23s
contrib-tests-matrix (other)	4m 29s
contrib_tests	1s
	1h 20m 17s

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