Python 3.11 http2_abort updates (#263)

The formatting of exception strings changed in httpx for Python 3.11.
This patch adjusts test expectations for this.

Author: bneradt

test/autests/gold_tests/http2_abort/http2_abort.test.py

@@ -110,7 +110,7 @@
     'Received RST_STREAM frame.')
 
 proxy.Streams.stdout += Testers.ContainsExpression(
-    'StreamReset stream_id:1, error_code:ErrorCodes.ENHANCE_YOUR_CALM, remote_reset:True',
+    'StreamReset stream_id:1, error_code:(11|ErrorCodes.ENHANCE_YOUR_CALM), remote_reset:True',
     'Received RST_STREAM frame.')
 
 #
@@ -182,5 +182,5 @@
     'Server connection should terminate.')
 
 proxy.Streams.stdout += Testers.ContainsExpression(
-    'ConnectionTerminated error_code:ErrorCodes.STREAM_CLOSED, last_stream_id:0, additional_data:None',
+    'ConnectionTerminated error_code:(5|ErrorCodes.STREAM_CLOSED), last_stream_id:0, additional_data:None',
     'Received GOAWAY frame.')