Reduce noise from moto GET/PUT operations

Moto prints messages like this:

    127.0.0.1 - - [07/Oct/2024 12:35:16] "PUT /bucket-name/path?x-id=PutObject HTTP/1.1" 200 -

After the root logger adds its context information, this is what
actually gets printed to the log:

    2024-10-07 22:35:16.371 INFO [_internal.py:97] 127.0.0.1 - - [07/Oct/2024 22:35:16] "PUT /bucket-name/path?x-id=PutObject HTTP/1.1" 200 -

That's very verbose. Remove the hostname and the extra timestamp, to
make it a little less verbose. With this PR, the final output looks
like this:

    2024-10-07 22:35:16.371 INFO [_internal.py:97] "PUT /bucket-name/path?x-id=PutObject HTTP/1.1" 200 -

test_runner/fixtures/log_helper.py

@@ -24,9 +24,20 @@ https://docs.pytest.org/en/6.2.x/logging.html
 # log format is specified in pytest.ini file
 LOGGING = {
     "version": 1,
+    "filters": {
+        "wzfilter": {
+            "()": "fixtures.log_helper_internal.WerkzeugNoiseFilter",
+        },
+    },
     "loggers": {
         "root": {"level": "INFO"},
         "root.safekeeper_async": {"level": "INFO"},  # a lot of logs on DEBUG level
+
+        # Use a custom filter to make werkzeug's messages less verbose.
+        "werkzeug": {
+            "filters": ["wzfilter"],
+            "level": "INFO",
+        },
     },
 }
 

test_runner/fixtures/log_helper_internal.py

@@ -0,0 +1,24 @@
+# These are logically part of in log_helper.py, but need to be in a
+# different file because these get loaded from the logging config
+# file. If you try to included these in log_helper.py directly, you
+# get an error about circular dependency.
+import re
+
+class WerkzeugNoiseFilter(object):
+    """Moto server that we use for mocking S3 uses werkzeug, which
+    logs all HTTP operations.  It constructs log messages like this:
+
+        127.0.0.1 - - [08/Oct/2024 12:43:46] "PUT /bucket-name/path?x-id=PutObject HTTP/1.1" 200 -
+
+    The IP address is not interesting in tests, as it's always just
+    127.0.0.1. And the timestamp is redundant with the timestamp we
+    print for all log messages anyway, with millisecond precision.
+    Unfortunately those are "etched" in the message, and cannot be
+    overriden by setting a custom formatter. To reduce the noise in
+    the test output, this filter removes those fields from the log
+    messages.
+    """
+
+    def filter(self, logRecord):
+        logRecord.msg = re.sub(r'127\.0\.0\.1 - - \[.+\] (".*".*)', r'\1', logRecord.msg)
+        return True