chore: remove local AsyncBidiRpc and use from google-api-core >= 2.27.0 (#1597)

* chore: user AsyncBidiRpc from google-api-core

* update google-api-core version to min of 2.27.0

* update import statement in test files as well

* fix python3.9 constraints file

Author: chandra-siri

google/cloud/storage/_experimental/asyncio/async_read_object_stream.py

@@ -28,7 +28,8 @@
 from google.cloud.storage._experimental.asyncio.async_abstract_object_stream import (
     _AsyncAbstractObjectStream,
 )
-from google.cloud.storage._experimental.asyncio.bidi_async import AsyncBidiRpc
+
+from google.api_core.bidi_async import AsyncBidiRpc
 
 
 class _AsyncReadObjectStream(_AsyncAbstractObjectStream):

google/cloud/storage/_experimental/asyncio/bidi_async.py

@@ -29,7 +29,7 @@
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
     "google-auth >= 2.26.1, < 3.0.0",
-    "google-api-core >= 2.15.0, < 3.0.0",
+    "google-api-core >= 2.27.0, < 3.0.0",
     "google-cloud-core >= 2.4.2, < 3.0.0",
     # The dependency "google-resumable-media" is no longer used. However, the
     # dependency is still included here to accommodate users who may be

google/cloud/storage/_experimental/asyncio/bidi_base.py

@@ -5,7 +5,7 @@
 # e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
 # Then this file should have google-cloud-foo==1.14.0
 google-auth==2.26.1
-google-api-core==2.15.0
+google-api-core>=2.15.0
 google-cloud-core==2.4.2
 google-resumable-media==2.7.2
 requests==2.22.0

setup.py

@@ -30,7 +30,7 @@
 except ImportError:  # pragma: NO COVER
     pytest.skip("No GRPC", allow_module_level=True)
 
-from google.cloud.storage._experimental.asyncio import bidi_async
+from google.api_core import bidi_async
 from google.api_core import exceptions