Added minor patches (#615)

Added minor patches

Typing fix for py39.
Added missing init files.

Reviewed-by: Anton Sidelnikov

Author: vineet-pruthi

otcextensions/osclient/cbr/v3/__init__.py

@@ -76,7 +76,7 @@ def list(cls, session, paginated=True, base_path=None, **params):
         if not cls.allow_list:
             raise exceptions.MethodNotSupported(cls, 'list')
         session = cls._get_session(session)
-        microversion = cls._get_microversion(session)
+        microversion = cls._get_microversion(session, action='list')
 
         if base_path is None:
             base_path = cls.base_path

otcextensions/osclient/modelartsv2/__init__.py

@@ -11,6 +11,7 @@
 # under the License.
 
 from openstack import proxy
+from typing import Optional
 import requests
 
 
@@ -24,10 +25,10 @@ class Proxy(proxy.Proxy):
 
     def _report_stats_statsd(
             self,
-            response: requests.Response | None,
-            url: str | None = None,
-            method: str | None = None,
-            exc: BaseException | None = None,
+            response: Optional[requests.Response],
+            url: Optional[str] = None,
+            method: Optional[str] = None,
+            exc: Optional[BaseException] = None,
     ) -> None:
         if not self._statsd_prefix:
             return None
@@ -77,10 +78,10 @@ def _report_stats_statsd(
 
     def _report_stats_influxdb(
             self,
-            response: requests.Response | None,
-            url: str | None = None,
-            method: str | None = None,
-            exc: BaseException | None = None,
+            response: Optional[requests.Response],
+            url: Optional[str] = None,
+            method: Optional[str] = None,
+            exc: Optional[BaseException] = None,
     ) -> None:
         if not self._influxdb_client:
             return None

otcextensions/sdk/dws/v1/flavor.py

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    - Typing fix for py39.
+    - Added missing __init__ files.