[receiver/lightprometheus] Change configurable resource_attribute nam… #13274

Job	Run time
setup-environment	1m 30s
gofmt	7m 36s
generate-metrics	6m 11s
tidy	2m 7s
coverage	12m 12s
cross-compile (binaries-darwin_amd64)	5m 28s
lint	17m 10s
cross-compile (binaries-darwin_arm64)	5m 30s
test	17m 25s
cross-compile (binaries-linux_amd64)	5m 26s
cross-compile (binaries-linux_arm64)	5m 30s
cross-compile (binaries-windows_amd64)	5m 19s
cross-compile (binaries-linux_ppc64le)	5m 23s
	1h 36m 47s

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