[cmd/builder] Allow configuring confmap providers #21954

Job	Run time
contrib-tests-matrix (receiver-0)	5m 37s
contrib-tests-matrix (receiver-1)	7m 30s
contrib-tests-matrix (receiver-2)	9m 0s
contrib-tests-matrix (receiver-3)	7m 23s
contrib-tests-matrix (processor)	4m 59s
contrib-tests-matrix (exporter-0)	10m 33s
contrib-tests-matrix (exporter-1)	7m 21s
contrib-tests-matrix (extension)	5m 47s
contrib-tests-matrix (connector)	4m 11s
contrib-tests-matrix (internal)	6m 19s
contrib-tests-matrix (pkg)	3m 47s
contrib-tests-matrix (cmd-0)	7m 25s
contrib-tests-matrix (cmd-1)	3m 52s
contrib-tests-matrix (other)	9m 7s
contrib_tests	1s
	1h 32m 52s

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