update collector workflow to publish a prod layer (#678)

Also adding a fairly minimal release document.

---------

Signed-off-by: Alex Boten <[email protected]>

Author: Alex Boten

.github/workflows/release-layer-collector.yml

@@ -49,27 +49,27 @@ jobs:
           - amd64
           - arm64
         aws_region:
-#          - ap-northeast-1
-#          - ap-northeast-2
-#          - ap-south-1
-#          - ap-southeast-1
-#          - ap-southeast-2
-#          - ca-central-1
-#          - eu-central-1
-#          - eu-north-1
-#          - eu-west-1
-#          - eu-west-2
-#          - eu-west-3
-#          - sa-east-1
-#          - us-east-1
-#          - us-east-2
+          - ap-northeast-1
+          - ap-northeast-2
+          - ap-south-1
+          - ap-southeast-1
+          - ap-southeast-2
+          - ca-central-1
+          - eu-central-1
+          - eu-north-1
+          - eu-west-1
+          - eu-west-2
+          - eu-west-3
+          - sa-east-1
+          - us-east-1
+          - us-east-2
           - us-west-1
           - us-west-2
     with:
       artifact-name: opentelemetry-collector-layer-${{ matrix.architecture }}.zip
       layer-name: opentelemetry-collector
       component-version: ${{needs.build-layer.outputs.COLLECTOR_VERSION}}
       architecture: ${{ matrix.architecture }}
-      release-group: dev
+      release-group: prod
       aws_region: ${{ matrix.aws_region }}
     secrets: inherit

RELEASE.md

@@ -0,0 +1,7 @@
+# OpenTelemetry Lambda Layer Release Procedure
+
+The release process is almost entirely managed by [GitHub actions](https://github.com/open-telemetry/opentelemetry-lambda/tree/main/.github/workflows). To publish a new layer:
+
+1. Create a new tag for the layer to publish. For example, to create a new collector layer, the following command is used:
+        `git tag layer-collector/0.0.8`
+2. Push the tag to [opentelemetry-lambda](https://github.com/open-telemetry/opentelemetry-lambda) repository to trigger the publish action.