Add JMX metrics gatherer version 1.51.0-alpha #44358

Job	Run time
setup-environment	2m 12s
arm-unittest-matrix (receiver-1)	8m 31s
arm-unittest-matrix (receiver-2)	9m 9s
arm-unittest-matrix (receiver-3)	6m 57s
arm-unittest-matrix (processor-0)	4m 16s
arm-unittest-matrix (exporter-0)	3m 23s
arm-unittest-matrix (processor-1)	4m 43s
arm-unittest-matrix (exporter-1)	9m 19s
arm-unittest-matrix (exporter-2)	3m 56s
arm-unittest-matrix (receiver-0)	6m 23s
arm-unittest-matrix (exporter-3)	6m 51s
arm-unittest-matrix (internal)	9m 14s
arm-unittest-matrix (extension)	7m 25s
arm-unittest-matrix (connector)	5m 20s
arm-unittest-matrix (cmd-0)	2m 57s
arm-unittest-matrix (other)	5m 0s
arm-unittest-matrix (pkg)	5m 7s
arm-unittest	2s
flakytests-generate-issues	0s
	1h 40m 45s

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