Move _SUPPRESS_INTRUMENTATION key from instrumentation to api

This will continue to be part of the internal API but live in the API
context package.

opentelemetry-api/src/opentelemetry/context/__init__.py

@@ -157,3 +157,9 @@ def detach(token: object) -> None:
         _RUNTIME_CONTEXT.detach(token)  # type: ignore
     except Exception:  # pylint: disable=broad-except
         logger.error("Failed to detach context")
+
+
+# FIXME This is a temporary location for the suppress instrumentation key.
+# Once the decision around how to suppress instrumentation is made in the
+# spec, this key should be moved accordingly.
+_SUPPRESS_INSTRUMENTATION_KEY = create_key("suppress_instrumentation")

opentelemetry-instrumentation/src/opentelemetry/instrumentation/utils.py

@@ -16,14 +16,9 @@
 
 from wrapt import ObjectProxy
 
-from opentelemetry.context import create_key
+from opentelemetry.context import _SUPPRESS_INSTRUMENTATION_KEY
 from opentelemetry.trace import StatusCode
 
-# FIXME This is a temporary location for the suppress instrumentation key.
-# Once the decision around how to suppress instrumentation is made in the
-# spec, this key should be moved accordingly.
-_SUPPRESS_INSTRUMENTATION_KEY = create_key("suppress_instrumentation")
-
 
 def extract_attributes_from_object(
     obj: any, attributes: Sequence[str], existing: Dict[str, str] = None

opentelemetry-sdk/src/opentelemetry/sdk/trace/export/__init__.py

@@ -21,8 +21,13 @@
 from os import environ, linesep
 from typing import Optional
 
-from opentelemetry.context import Context, attach, detach, set_value
-from opentelemetry.instrumentation.utils import _SUPPRESS_INSTRUMENTATION_KEY
+from opentelemetry.context import (
+    _SUPPRESS_INSTRUMENTATION_KEY,
+    Context,
+    attach,
+    detach,
+    set_value,
+)
 from opentelemetry.sdk.environment_variables import (
     OTEL_BSP_EXPORT_TIMEOUT,
     OTEL_BSP_MAX_EXPORT_BATCH_SIZE,