[connector/spanmetricsconnector] add separate additional dimensions f… #93

Job	Run time
arm-unittest-matrix (receiver-0)	7m 4s
arm-unittest-matrix (receiver-1)	9m 4s
arm-unittest-matrix (receiver-2)	10m 30s
arm-unittest-matrix (receiver-3)	7m 43s
arm-unittest-matrix (processor-0)	5m 1s
arm-unittest-matrix (processor-1)	6m 14s
arm-unittest-matrix (exporter-0)	4m 59s
arm-unittest-matrix (exporter-1)	11m 24s
arm-unittest-matrix (exporter-2)	6m 23s
arm-unittest-matrix (exporter-3)	6m 15s
arm-unittest-matrix (extension)	7m 32s
arm-unittest-matrix (connector)	6m 10s
arm-unittest-matrix (internal)	8m 36s
arm-unittest-matrix (pkg)	6m 43s
arm-unittest-matrix (cmd-0)	4m 31s
arm-unittest-matrix (other)	5m 45s
arm-unittest	1s
	1h 53m 55s

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