Fixed debug field usage in zipkin exporter (#549)

Zipkin spec expects the debug field to be a boolean, not an integer.

Author: owais

ext/opentelemetry-ext-zipkin/src/opentelemetry/ext/zipkin/__init__.py

@@ -180,7 +180,7 @@ def _translate_to_zipkin(self, spans: Sequence[Span]):
             }
 
             if context.trace_flags.sampled:
-                zipkin_span["debug"] = 1
+                zipkin_span["debug"] = True
 
             if isinstance(span.parent, Span):
                 zipkin_span["parentId"] = format(

ext/opentelemetry-ext-zipkin/tests/test_zipkin_exporter.py

@@ -197,7 +197,7 @@ def test_export(self):
                         "value": "event0",
                     }
                 ],
-                "debug": 1,
+                "debug": True,
                 "parentId": format(parent_id, "x"),
             },
             {