Exporters not sending telemetry scope attributes

[aabmass]

For both spans and metrics, we should be including the OTel scope. See collector fixtures for implementation details:

• Trace otel.scope.*: https://github.com/GoogleCloudPlatform/opentelemetry-operations-go/blob/d637680bde0cb1e4d06117621478e5ac281ff556/exporter/collector/integrationtest/testdata/fixtures/traces/traces_basic_expected.json#L112C1-L121C17
• Metrics instrumentation_scope and instrumentation_version: https://github.com/GoogleCloudPlatform/opentelemetry-operations-go/blob/d637680bde0cb1e4d06117621478e5ac281ff556/exporter/collector/integrationtest/testdata/fixtures/logs/logs_apache_error_scope_expected.json#L21-L22

[aabmass]

Could also test in the e2e tests GoogleCloudPlatform/opentelemetry-operations-e2e-testing#60