Add retries to test fail mb rb (aws#10239)

Co-authored-by: jonathan343 <43360731+jonathan343@users.noreply.github.com>

Author: SamRemis

tests/integration/customizations/s3/test_plugin.py

@@ -1372,8 +1372,14 @@ def test_mb_rb(self, s3_utils):
         self.assert_no_errors(p)
 
     def test_fail_mb_rb(self):
-        # Choose a bucket name that already exists.
-        p = aws('s3 mb s3://mybucket')
+        # S3 can intermittently return an `OperationAborted` exception instead of
+        # `BucketAlreadyExists`, so we give this test four attempts
+        for i in range(4):
+            # Choose a bucket name that already exists.
+            p = aws('s3 mb s3://mybucket')
+            if "OperationAborted" not in p.stderr:
+                break
+            time.sleep(2**i)
         assert "BucketAlreadyExists" in p.stderr
         assert p.rc == 1