fix(BigTable): Fix TestReadRow_Generic_DeadlineExceeded test by making DeadlineExceeded non transient

Author: cy-yun

apis/Google.Cloud.Bigtable.V2/Google.Cloud.Bigtable.V2.ConformanceTests/Services/CloudBigtableV2TestProxyImpl.cs

@@ -75,6 +75,13 @@ void MaybeOverrideTimeoutSetting(BigtableServiceApiSettings settings)
                 settings.ReadModifyWriteRowSettings = callSettings;
                 settings.SampleRowKeysSettings = callSettings;
                 settings.CallSettings = callSettings;
+                // same as default ReadRowsRetrySettings except DeadlineExceeded is not in the retryFilter
+                settings.ReadRowsRetrySettings = RetrySettings.FromExponentialBackoff(
+                    maxAttempts: 5,
+                    initialBackoff: TimeSpan.FromMilliseconds(10),
+                    maxBackoff: TimeSpan.FromMinutes(1),
+                    backoffMultiplier: 2,
+                    retryFilter: RetrySettings.FilterForStatusCodes(StatusCode.Unavailable, StatusCode.Aborted));
             }
         }
 
@@ -146,7 +153,7 @@ public override async Task<RowsResult> ReadRows(Google.Cloud.Bigtable.V2.Conform
             {
                 rowsResult.Rows.Add(row);
             }
-            string message = rowsResult.Rows.Count == 0 ? $"ReadRows didn't find rows or deadline exceeded" : "ReadRows succeeded";
+            string message = rowsResult.Rows.Count == 0 ? $"ReadRows didn't find rows" : "ReadRows succeeded";
             rowsResult.Status = SetSuccessStatus(message);
             return rowsResult;
         }

apis/Google.Cloud.Bigtable.V2/Google.Cloud.Bigtable.V2.ConformanceTests/bigtable-conformance.sh

@@ -34,7 +34,7 @@ cd cloud-bigtable-clients-test/tests
 # Cookie, RetryInfo, ExecuteQuery, ReverseScans and FeatureGap are known failures of new features that we don't yet support.
 # CloseClient we don't support as expected, but we support it in a valid manner.
 # For the others we have issues to investigate, see comments in b/372509076 .
-eval "go test -v -proxy_addr=:7238 -skip _Retry_WithRoutingCookie\|_Retry_WithRetryInfo\|_CloseClient\|_ReverseScans\|TestFeatureGap\|TestExecuteQuery\|TestReadRows_Retry_LastScannedRow_Reverse\|TestReadRow_Generic_DeadlineExceeded"
+eval "go test -v -proxy_addr=:7238 -skip _Retry_WithRoutingCookie\|_Retry_WithRetryInfo\|_CloseClient\|_ReverseScans\|TestFeatureGap\|TestExecuteQuery\|TestReadRows_Retry_LastScannedRow_Reverse"
 returnCode=$?
 popd