[processor/resourcedetection] Add support for host cpuinfo attributes (…

…open-telemetry#26533)

**Description:** : Added support for host's cpuinfo attributes
as part of the system resourcedetection. This information
		   is retrieved from /proc/cpuinfo.

**Link to tracking Issue:** open-telemetry#26532


**Testing:** 

### How to test this manually

1. Using the following configuration:
```yml
receivers:
  hostmetrics:
    collection_interval: 30s
    scrapers:
      cpu:

processors:
  resourcedetection/system:
    detectors: ["system"]
    system:
      hostname_sources: ["lookup", "cname", "dns", "os"]
      resource_attributes:
        host.name:
          enabled: true
        host.id:
          enabled: true
        host.cpu.cache.l2.size:
          enabled: true
        host.cpu.family:
          enabled: true
        host.cpu.model.id:
          enabled: true
        host.cpu.model.name:
          enabled: true
        host.cpu.stepping:
          enabled: true
        host.cpu.vendor.id:
          enabled: true

service:
  pipelines:
    metrics:
      receivers: [hostmetrics]
      exporters: [file]
      processors: [resourcedetection/system]

exporters:
  file:
    path: ./output.json
```
2. Start the collector with `./bin/otelcontribcol_linux_amd64 --config
examples/host_config.yaml`
3. The output reports the added attributes succesfully:
```json
  {
    "resourceMetrics":[
      {
        "resource":{
          "attributes":[
            {
              "key":"host.name",
              "value":{
                "stringValue":"chrismark-ThinkPad-X1-Carbon-Gen-9"
              }
            },
            {
              "key":"os.type",
              "value":{
                "stringValue":"linux"
              }
            },
            {
              "key":"host.id",
              "value":{
                "stringValue":"d6488716404e4ce4854ff0e230944c6d"
              }
            },
            {
              "key":"host.cpu.vendor.id",
              "value":{
                "stringValue":"GenuineIntel"
              }
            },
            {
              "key":"host.cpu.family",
              "value":{
                "stringValue":"6"
              }
            },
            {
              "key":"host.cpu.model.id",
              "value":{
                "stringValue":"140"
              }
            },
            {
              "key":"host.cpu.model.name",
              "value":{
                "stringValue":"11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz"
              }
            },
            {
              "key":"host.cpu.stepping",
              "value":{
                "intValue":"1"
              }
            },
            {
              "key":"host.cpu.cache.l2.size",
              "value":{
                "intValue":"12288"
              }
            }
          ]
        },
        "scopeMetrics":[...],
        "schemaUrl":"https://opentelemetry.io/schemas/1.9.0"
      }
    ]
  }
```

### Unit tests
-

**Documentation:** Updated [README.md
](https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/26533/files#diff-2fd609a720e95f7ad6fe8c31180f20671dbf62301fba3c9914fcb81a8cc930aa)

Signed-off-by: ChrsMark <[email protected]>

.chloggen/add_host_cpuinfo.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: processor/resourcedetection
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Added support for host's cpuinfo attributes.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [26532]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: In Linux and Darwin all fields are populated. In Windows only family, vendor.id and model.name are populated.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

processor/resourcedetectionprocessor/README.md

@@ -48,6 +48,12 @@ Queries the host machine to retrieve the following resource attributes:
  * host.arch
  * host.name
  * host.id
+ * host.cpu.vendor.id
+ * host.cpu.family
+ * host.cpu.model.id
+ * host.cpu.model.name
+ * host.cpu.stepping
+ * host.cpu.cache.l2.size
  * os.description
  * os.type
 

processor/resourcedetectionprocessor/go.mod

@@ -10,6 +10,7 @@ require (
  github.com/hashicorp/consul/api v1.24.0
  github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/ecsutil v0.85.0
  github.com/open-telemetry/opentelemetry-collector-contrib/internal/metadataproviders v0.85.0
+ github.com/shirou/gopsutil/v3 v3.23.7
  github.com/stretchr/testify v1.8.4
  go.opentelemetry.io/collector/component v0.85.0
  go.opentelemetry.io/collector/config/confighttp v0.85.0
@@ -44,6 +45,7 @@ require (
  github.com/fsnotify/fsnotify v1.6.0 // indirect
  github.com/go-logr/logr v1.2.4 // indirect
  github.com/go-logr/stdr v1.2.2 // indirect
+ github.com/go-ole/go-ole v1.2.6 // indirect
  github.com/go-openapi/jsonpointer v0.19.6 // indirect
  github.com/go-openapi/jsonreference v0.20.2 // indirect
  github.com/go-openapi/swag v0.22.3 // indirect
@@ -65,6 +67,7 @@ require (
  github.com/klauspost/compress v1.16.7 // indirect
  github.com/knadh/koanf v1.5.0 // indirect
  github.com/knadh/koanf/v2 v2.0.1 // indirect
+ github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
  github.com/mailru/easyjson v0.7.7 // indirect
  github.com/mattn/go-colorable v0.1.13 // indirect
  github.com/mattn/go-isatty v0.0.17 // indirect
@@ -80,8 +83,13 @@ require (
  github.com/opencontainers/image-spec v1.0.2 // indirect
  github.com/pkg/errors v0.9.1 // indirect
  github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+ github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
  github.com/rs/cors v1.10.0 // indirect
+ github.com/shoenig/go-m1cpu v0.1.6 // indirect
  github.com/stretchr/objx v0.5.0 // indirect
+ github.com/tklauser/go-sysconf v0.3.11 // indirect
+ github.com/tklauser/numcpus v0.6.0 // indirect
+ github.com/yusufpapurcu/wmi v1.2.3 // indirect
  go.opencensus.io v0.24.0 // indirect
  go.opentelemetry.io/collector v0.85.0 // indirect
  go.opentelemetry.io/collector/config/configauth v0.85.0 // indirect