Put metrics fields to bottom of EMF log entry. (#108) #504

Job	Run time
windows-unittest-matrix (receiver-0)	18m 47s
windows-unittest-matrix (receiver-1)	19m 7s
windows-unittest-matrix (processor)	14m 39s
windows-unittest-matrix (exporter)	19m 4s
windows-unittest-matrix (extension)	13m 46s
windows-unittest-matrix (internal)	16m 15s
windows-unittest-matrix (pkg)	13m 50s
windows-unittest-matrix (cmd)	19m 11s
windows-unittest-matrix (other)	19m 3s
windows-unittest	0s
	2h 33m 42s

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