Update instrumentation readme to indicate pre-release status (#3264)

src/OpenTelemetry.Instrumentation.AspNet/README.md

@@ -6,7 +6,19 @@
 This is an [Instrumentation
 Library](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/glossary.md#instrumentation-library),
 which instruments [ASP.NET](https://docs.microsoft.com/aspnet/overview) and
-collect telemetry about incoming web requests.
+collect metrics and traces about incoming web requests.
+
+**Note: This component is based on the OpenTelemetry semantic conventions for
+[metrics](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/metrics/semantic_conventions)
+and
+[traces](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/trace/semantic_conventions).
+These conventions are
+[Experimental](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md),
+and hence, this package is a [pre-release](../../VERSIONING.md#pre-releases).
+Until a [stable
+version](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/telemetry-stability.md)
+is released, there can be breaking changes. You can track the progress from
+[milestones](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23).**
 
 ## Steps to enable OpenTelemetry.Instrumentation.AspNet
 

src/OpenTelemetry.Instrumentation.GrpcNetClient/README.md

@@ -5,7 +5,17 @@
 
 This is an [Instrumentation Library](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/glossary.md#instrumentation-library)
 which instruments [Grpc.Net.Client](https://www.nuget.org/packages/Grpc.Net.Client)
-and collects telemetry about outgoing gRPC requests.
+and collects traces about outgoing gRPC requests.
+
+**Note: This component is based on the OpenTelemetry semantic conventions for
+[traces](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/trace/semantic_conventions).
+These conventions are
+[Experimental](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md),
+and hence, this package is a [pre-release](../../VERSIONING.md#pre-releases).
+Until a [stable
+version](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/telemetry-stability.md)
+is released, there can be breaking changes. You can track the progress from
+[milestones](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23).**
 
 ## Supported .NET Versions
 

src/OpenTelemetry.Instrumentation.Http/README.md

@@ -9,7 +9,19 @@ which instruments
 [System.Net.Http.HttpClient](https://docs.microsoft.com/dotnet/api/system.net.http.httpclient)
 and
 [System.Net.HttpWebRequest](https://docs.microsoft.com/dotnet/api/system.net.httpwebrequest)
-and collects telemetry about outgoing HTTP requests.
+and collects metrics and traces about outgoing HTTP requests.
+
+**Note: This component is based on the OpenTelemetry semantic conventions for
+[metrics](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/metrics/semantic_conventions)
+and
+[traces](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/trace/semantic_conventions).
+These conventions are
+[Experimental](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md),
+and hence, this package is a [pre-release](../../VERSIONING.md#pre-releases).
+Until a [stable
+version](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/telemetry-stability.md)
+is released, there can be breaking changes. You can track the progress from
+[milestones](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23).**
 
 ## Steps to enable OpenTelemetry.Instrumentation.Http
 

src/OpenTelemetry.Instrumentation.SqlClient/README.md

@@ -9,7 +9,17 @@ which instruments
 [Microsoft.Data.SqlClient](https://www.nuget.org/packages/Microsoft.Data.SqlClient)
 and
 [System.Data.SqlClient](https://www.nuget.org/packages/System.Data.SqlClient)
-and collects telemetry about database operations.
+and collects traces about database operations.
+
+**Note: This component is based on the OpenTelemetry semantic conventions for
+[traces](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/trace/semantic_conventions).
+These conventions are
+[Experimental](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md),
+and hence, this package is a [pre-release](../../VERSIONING.md#pre-releases).
+Until a [stable
+version](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/telemetry-stability.md)
+is released, there can be breaking changes. You can track the progress from
+[milestones](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23).**
 
 ## Steps to enable OpenTelemetry.Instrumentation.SqlClient
 

src/OpenTelemetry.Instrumentation.StackExchangeRedis/README.md

@@ -7,7 +7,17 @@ This is an
 [Instrumentation Library](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/glossary.md#instrumentation-library),
 which instruments
 [StackExchange.Redis](https://www.nuget.org/packages/StackExchange.Redis/)
-and collects telemetry about outgoing calls to Redis.
+and collects traces about outgoing calls to Redis.
+
+**Note: This component is based on the OpenTelemetry semantic conventions for
+[traces](https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification/trace/semantic_conventions).
+These conventions are
+[Experimental](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md),
+and hence, this package is a [pre-release](../../VERSIONING.md#pre-releases).
+Until a [stable
+version](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/telemetry-stability.md)
+is released, there can be breaking changes. You can track the progress from
+[milestones](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23).**
 
 ## Steps to enable OpenTelemetry.Instrumentation.StackExchangeRedis