chore: send eot response for batchmap operations (#145) #45

Job	Run time
Build, Tag, and Push Image (batch-map-flatmap)	1m 37s
Build, Tag, and Push Image (mapt-event-time-filter-function)	1m 20s
Build, Tag, and Push Image (flat-map-stream)	1m 34s
Build, Tag, and Push Image (map-flatmap)	1m 38s
Build, Tag, and Push Image (even-odd)	1m 39s
Build, Tag, and Push Image (simple-sink)	1m 19s
Build, Tag, and Push Image (reduce-sum)	1m 21s
Build, Tag, and Push Image (reduce-stream-sum)	1m 36s
Build, Tag, and Push Image (map-forward-message)	1m 18s
Build, Tag, and Push Image (reduce-counter)	1m 12s
Build, Tag, and Push Image (sideinput-example)	1m 19s
Build, Tag, and Push Image (udf-sideinput-example)	1m 47s
Build, Tag, and Push Image (source-simple-source)	1m 49s
Build, Tag, and Push Image (session-reduce-count)	1m 43s
	21m 12s

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