Enable k8s otel metrics remapping to elastic metrics #1137

Benchdiff Results

Benchmark Command: go test ./... -run ^ -bench . -count 5 -benchtime 100ms -cpu 1,2 -benchmem

HEAD sha: 2dcaa4c

Base sha: 54c4edf

Degraded: false

pkg: github.com/elastic/apm-data/codec
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
Encode/format=json	26242	1%	26556.4	2%	~	(p=0.222 n=5+5)
Encode/format=json-2	13905.4	1%	14025.8	3%	~	(p=0.421 n=5+5)
Encode/format=vtproto	4673	2%	5184	8%	+10.94%	(p=0.008 n=5+5)
Encode/format=vtproto-2	2579.75	0%	2886.8	22%	+11.90%	(p=0.016 n=4+5)
Decode/format=json	126269	1%	127851	4%	~	(p=0.310 n=5+5)
Decode/format=json-2	66308.2	3%	72455	11%	~	(p=0.548 n=5+5)
Decode/format=vtproto	19895.8	1%	20730.6	1%	+4.20%	(p=0.008 n=5+5)
Decode/format=vtproto-2	12290.8	6%	12702.6	4%	~	(p=0.222 n=5+5)

name	old bytes/op (bytes/op)	±	new bytes/op (bytes/op)	±	delta	±
Encode/format=json	6564	0%	6564	0%	~	(all equal)
Encode/format=json-2	6564	0%	6564	0%	~	(all equal)
Encode/format=vtproto	2775	0%	2775	0%	~	(all equal)
Encode/format=vtproto-2	2775	0%	2775	0%	~	(all equal)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
Encode/format=json	7752	0%	7752	0%	~	(all equal)
Encode/format=json-2	7753	0%	7754.2	0%	~	(p=0.238 n=4+5)
Encode/format=vtproto	3072	0%	3072	0%	~	(all equal)
Encode/format=vtproto-2	3072	0%	3072	0%	~	(all equal)
Decode/format=json	14504	0%	14504	0%	~	(all equal)
Decode/format=json-2	14504	0%	14504	0%	~	(all equal)
Decode/format=vtproto	12976	0%	12976	0%	~	(all equal)
Decode/format=vtproto-2	13012.8	0%	13011.8	0%	~	(p=0.238 n=5+5)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
Encode/format=json	30	0%	30	0%	~	(all equal)
Encode/format=json-2	30	0%	30	0%	~	(all equal)
Encode/format=vtproto	1	0%	1	0%	~	(all equal)
Encode/format=vtproto-2	1	0%	1	0%	~	(all equal)
Decode/format=json	397	0%	397	0%	~	(all equal)
Decode/format=json-2	397	0%	397	0%	~	(all equal)
Decode/format=vtproto	348	0%	348	0%	~	(all equal)
Decode/format=vtproto-2	348	0%	348	0%	~	(all equal)

pkg: github.com/elastic/apm-data/input/elasticapm/internal/decoder
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
NDStreamDecoder	275.72	4%	276.78	2%	~	(p=0.841 n=5+5)
NDStreamDecoder-2	157.2	5%	157.72	2%	~	(p=0.841 n=5+5)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
NDStreamDecoder	72	0%	72	0%	~	(all equal)
NDStreamDecoder-2	72	0%	72	0%	~	(all equal)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
NDStreamDecoder	4	0%	4	0%	~	(all equal)
NDStreamDecoder-2	4	0%	4	0%	~	(all equal)

pkg: github.com/elastic/apm-data/model/modeljson
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
APMEventToJSON/to-json	15249.4	2%	14557.4	4%	~	(p=0.056 n=5+5)
APMEventToJSON/to-json-2	13195.6	7%	12627.2	1%	~	(p=0.056 n=5+5)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
APMEventToJSON/to-json	2472	0%	2472	0%	~	(all equal)
APMEventToJSON/to-json-2	2472	0%	2472	0%	~	(all equal)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
APMEventToJSON/to-json	37	0%	37	0%	~	(all equal)
APMEventToJSON/to-json-2	37	0%	37	0%	~	(all equal)