[chore] [exporter/signalfx] Remove dependency on signalfx-agent (#27040)

https://github.com/signalfx/signalfx-agent is marked as EOS. In order to
remove the dependency, this change brings code from
https://github.com/signalfx/signalfx-agent/tree/main/pkg/apm module
needed for the exporter without any modifications other than linter
fixes. Exporter uses only part of that code. We can remove unused parts
in the next steps to cut the dependency tree.

Author: dmitryax

cmd/configschema/go.mod

@@ -169,7 +169,6 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/zookeeperreceiver v0.85.0 // indirect
 	github.com/samber/lo v1.37.0 // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
-	github.com/signalfx/signalfx-agent/pkg/apm v0.0.0-20230214151822-6a6813cf5bf1 // indirect
 	go.opentelemetry.io/collector/exporter v0.85.1-0.20230919160920-512b9c3c8fec // indirect
 	go.opentelemetry.io/collector/receiver v0.85.1-0.20230919160920-512b9c3c8fec // indirect
 )

cmd/configschema/go.sum

@@ -586,7 +586,6 @@ require (
 	github.com/signalfx/gohistogram v0.0.0-20160107210732-1ccfd2ff5083 // indirect
 	github.com/signalfx/golib/v3 v3.3.47 // indirect
 	github.com/signalfx/sapm-proto v0.13.0 // indirect
-	github.com/signalfx/signalfx-agent/pkg/apm v0.0.0-20230214151822-6a6813cf5bf1 // indirect
 	github.com/sijms/go-ora/v2 v2.7.17 // indirect
 	github.com/sirupsen/logrus v1.9.0 // indirect
 	github.com/snowflakedb/gosnowflake v1.6.24 // indirect

cmd/otelcontribcol/go.mod

@@ -211,7 +211,6 @@ require (
 	github.com/signalfx/gohistogram v0.0.0-20160107210732-1ccfd2ff5083 // indirect
 	github.com/signalfx/golib/v3 v3.3.47 // indirect
 	github.com/signalfx/sapm-proto v0.13.0 // indirect
-	github.com/signalfx/signalfx-agent/pkg/apm v0.0.0-20230214151822-6a6813cf5bf1 // indirect
 	github.com/soheilhy/cmux v0.1.5 // indirect
 	github.com/spf13/cobra v1.7.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect

cmd/otelcontribcol/go.sum

@@ -10,7 +10,6 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-	apmcorrelation "github.com/signalfx/signalfx-agent/pkg/apm/correlations"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/component"
@@ -21,6 +20,7 @@ import (
 	"go.opentelemetry.io/collector/exporter/exporterhelper"
 	"go.uber.org/zap"
 
+	apmcorrelation "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/signalfxexporter/internal/apm/correlations"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/signalfxexporter/internal/correlation"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/signalfxexporter/internal/metadata"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/signalfxexporter/internal/translation"

cmd/oteltestbedcol/go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/signalfx v0.85.0
 	github.com/shirou/gopsutil/v3 v3.23.8
 	github.com/signalfx/com_signalfx_metrics_protobuf v0.0.3
-	github.com/signalfx/signalfx-agent/pkg/apm v0.0.0-20230214151822-6a6813cf5bf1
+	github.com/signalfx/golib/v3 v3.3.47
 	github.com/stretchr/testify v1.8.4
 	go.opentelemetry.io/collector/component v0.85.1-0.20230919160920-512b9c3c8fec
 	go.opentelemetry.io/collector/config/confighttp v0.85.1-0.20230919160920-512b9c3c8fec
@@ -63,7 +63,6 @@ require (
 	github.com/rs/cors v1.10.0 // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
 	github.com/signalfx/gohistogram v0.0.0-20160107210732-1ccfd2ff5083 // indirect
-	github.com/signalfx/golib/v3 v3.3.47 // indirect
 	github.com/signalfx/sapm-proto v0.13.0 // indirect
 	github.com/tklauser/go-sysconf v0.3.12 // indirect
 	github.com/tklauser/numcpus v0.6.1 // indirect