Adding gfe_latencies metric to built-in metrics #9873

Job	Run time
dependencies (17)	1m 15s
units (11)	3m 22s
units (8)	3m 34s
units (17)	3m 22s
units (21)	3m 35s
units-with-multiplexed-session (11)	3m 51s
units-with-multiplexed-session (17)	4m 27s
units-with-multiplexed-session (8)	4m 18s
units-with-multiplexed-session (21)	4m 3s
windows	5m 24s
clirr	1m 22s
javadoc	2m 28s
lint	1m 23s
	42m 24s

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