Incorrect version in sdk/metric go.mod

[MadVikingGod]

Description

When attempting to pull the sdk/metric alpha you get an error:

go: downloading go.opentelemetry.io/otel/sdk v0.0.0-00010101000000-000000000000
go.opentelemetry.io/otel/sdk/metric imports
        go.opentelemetry.io/otel/sdk/instrumentation: go.opentelemetry.io/otel/[email protected]: invalid version: unknown revision 000000000000
go.opentelemetry.io/otel/sdk/metric imports
        go.opentelemetry.io/otel/sdk/resource: go.opentelemetry.io/otel/[email protected]: invalid version: unknown revision 000000000000

This is because the go.mod has an entry:

go.opentelemetry.io/otel/sdk v0.0.0-00010101000000-000000000000

Environment

• OS: linux
• Architecture: amd64
• Go Version: 1.19
• opentelemetry-go version: sdk/metrics v0.32.0

Steps To Reproduce

1. Start a new project go mod init main
2. Pull the metric SDK, go get go.opentelemetry.io/otel/sdk/metric

Expected behavior

We should be able to go get the SDK without a problem.

[williambrode]

I wonder if a step could be added to CI to just go get all the modules? Just a thought on how to prevent it in the future.