message: add blob ID to telemetry
  Add blob ID to telemetry in createBlob() and readBlobCore() in SPO driver.
diff: @@ -185,7 +185,8 @@ export class OdspDocumentStorageService implements IDocumentStorageService {
  eventName: "createBlob",
  size: file.length,
  },
  - async () => this.epochTracker.fetchAndParseAsJSON<api.ICreateBlobResponse>(
  + async (event) => {
  + const res = await this.epochTracker.fetchAndParseAsJSON<api.ICreateBlobResponse>(
  url,
  {
  body: file,
  @@ -193,7 +194,10 @@ export class OdspDocumentStorageService implements IDocumentStorageService {
  method: "POST",
  },
  FetchType.createBlob,
  - ),
  + );
  + event.end({ blobId: res.content.id });
  + return res;
  + },
  );
  });
  @@ -217,6 +221,7 @@ export class OdspDocumentStorageService implements IDocumentStorageService {
  this.logger,
  {
  eventName: "readDataBlob",
  + blobId,
  headers: Object.keys(headers).length !== 0 ? true : undefined,
  waitQueueLength: this.epochTracker.rateLimiter.waitQueueLength,
  },
  