fix(receiver/kubeletstats): address review comments on metadata schema

Author: rite7sh

receiver/kubeletstatsreceiver/README.md

@@ -1,5 +1,10 @@
 <!-- status autogenerated section -->
 # Kubelet Stats Receiver
+
+The Kubelet Stats Receiver pulls node, pod, container, and volume metrics from the API server on a kubelet
+and sends it down the metric pipeline for further processing.
+
+
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [beta]: metrics   |

receiver/kubeletstatsreceiver/metadata.yaml

@@ -1,6 +1,10 @@
 display_name: Kubelet Stats Receiver
 type: kubeletstats
 
+description: |
+  The Kubelet Stats Receiver pulls node, pod, container, and volume metrics from the API server on a kubelet
+  and sends it down the metric pipeline for further processing.
+
 reaggregation_enabled: true
 
 status:
@@ -15,83 +19,69 @@ resource_attributes:
   aws.volume.id:
     description: "[DEPRECATED] The id of the AWS Volume"
     enabled: true
-    requirement_level: opt_in
     type: string
     warnings:
       if_enabled: "This resource_attribute is deprecated and will be removed soon"
   container.id:
     description: "Container id used to identify container"
     enabled: true
-    requirement_level: recommended
     type: string
   fs.type:
     description: "[DEPRECATED] The filesystem type of the Volume"
     enabled: true
-    requirement_level: opt_in
     type: string
     warnings:
       if_enabled: "This resource_attribute is deprecated and will be removed soon"
   gce.pd.name:
     description: "[DEPRECATED] The name of the persistent disk in GCE"
     enabled: true
-    requirement_level: opt_in
     type: string
     warnings:
       if_enabled: "This resource_attribute is deprecated and will be removed soon"
   glusterfs.endpoints.name:
     description: "[DEPRECATED] The endpoint name that details Glusterfs topology"
     enabled: true
-    requirement_level: opt_in
     type: string
     warnings:
       if_enabled: "This resource_attribute is deprecated and will be removed soon"
   glusterfs.path:
     description: "[DEPRECATED] Glusterfs volume path"
     enabled: true
-    requirement_level: opt_in
     type: string
     warnings:
       if_enabled: "This resource_attribute is deprecated and will be removed soon"
 
   k8s.container.name:
     description: "Container name used by container runtime"
     enabled: true
-    requirement_level: recommended
     type: string
   k8s.namespace.name:
     description: "The name of the namespace that the pod is running in"
     enabled: true
-    requirement_level: recommended
     type: string
   k8s.node.name:
     description: "The name of the Node"
     enabled: true
-    requirement_level: required
     type: string
   k8s.persistentvolumeclaim.name:
     description: "The name of the Persistent Volume Claim"
     enabled: true
-    requirement_level: recommended
     type: string
   k8s.pod.name:
     description: "The name of the Pod"
     enabled: true
-    requirement_level: recommended
     type: string
   k8s.pod.uid:
     description: "The UID of the Pod"
     enabled: true
-    requirement_level: required
     type: string
   k8s.volume.name:
     description: "The name of the Volume"
     enabled: true
-    requirement_level: recommended
     type: string
   k8s.volume.type:
     description: "The type of the Volume"
     enabled: true
-    requirement_level: recommended
     type: string
   partition:
     description: "[DEPRECATED] The partition in the Volume"