Add support for filtering attribute keys for streams via an exclude list

This change adds details around supporting the creation of a stream with
a set of excluded attribute keys. This is already done in the Go implementation
and the proposal in this PR is to address an issue in the configuration
working group: open-telemetry/opentelemetry-configuration#112

Signed-off-by: Alex Boten <223565+codeboten@users.noreply.github.com>

CHANGELOG.md

@@ -16,6 +16,9 @@ release.
 
 ### Metrics
 
+- Add support for filtering attribute keys for streams via an exclude list.
+  ([]())
+
 ### Logs
 
 ### Events

specification/metrics/sdk.md

@@ -364,6 +364,10 @@ The SDK MUST accept the following stream configuration parameters:
   keys that identify the attributes that MUST be kept, and all other attributes
   MUST be ignored.
 
+  Additionally, implementations SHOULD support configuring an exclude-list of
+  attribute keys. The exclude-list contains attribute keys that identify the
+  attributes that MUST be excluded, all other attributes MUST be kept.
+
   Implementations MAY accept additional attribute filtering functionality for
   this parameter.