Add compliance with recording SchemaURL in OTLP Exporter (#2029)
Add compliance with recording SchemaURL in OTLP Exporter (#2029)

We want to capture if OTLP exporters implement OTLP changes required
by OTEP0152 (https://github.com/open-telemetry/oteps/blob/main/text/0152-telemetry-schemas.md)

Continuation of https://github.com/open-telemetry/opentelemetry-specification/pull/2008
open-telemetry/opentelemetry-specification,open-telemetry/opentelemetry-specification