fix: Span fields when JSON-serialized (#2862)

The 'status' field was not part of the type definition, even though we set
it, while the 'sampled' field should not be part of the JSON-serialized
span.

Author: rhcarvalho

packages/apm/src/span.ts

@@ -278,9 +278,9 @@ export class Span implements SpanInterface, SpanContext {
     description?: string;
     op?: string;
     parent_span_id?: string;
-    sampled?: boolean;
     span_id: string;
     start_timestamp: number;
+    status?: string;
     tags?: { [key: string]: string };
     timestamp?: number;
     trace_id: string;

packages/tracing/src/span.ts

@@ -307,9 +307,9 @@ export class Span implements SpanInterface, SpanContext {
     description?: string;
     op?: string;
     parent_span_id?: string;
-    sampled?: boolean;
     span_id: string;
     start_timestamp: number;
+    status?: string;
     tags?: { [key: string]: string };
     timestamp?: number;
     trace_id: string;

packages/types/src/span.ts

@@ -158,9 +158,9 @@ export interface Span extends SpanContext {
     description?: string;
     op?: string;
     parent_span_id?: string;
-    sampled?: boolean;
     span_id: string;
     start_timestamp: number;
+    status?: string;
     tags?: { [key: string]: string };
     timestamp?: number;
     trace_id: string;