Flaky redis docker test

__________________ TestRedisearchInstrument.test_redis_query ___________________

self = <test_redis_functional.TestRedisearchInstrument testMethod=test_redis_query>

    def test_redis_query(self):
        query = "@name:test"
        self.redis_client.ft("idx:test_vss").search(Query(query))
    
        spans = self.memory_exporter.get_finished_spans()
        span = next(span for span in spans if span.name == "redis.search")
    
        assert span.attributes.get("redis.search.query") == query
>       assert span.attributes.get("redis.search.total") == 1
E       AssertionError: assert 0 == 1
E        +  where 0 = <built-in method get of mappingproxy object at 0x7f23dba49f90>('redis.search.total')
E        +    where <built-in method get of mappingproxy object at 0x7f23dba49f90> = mappingproxy({'db.statement': 'FT.SEARCH ? ? ? ? ?', 'db.redis.args_length': 6, 'db.system': 'redis', 'db.redis.database_index': 0, 'net.peer.name': 'localhost', 'net.peer.port': 6379, 'net.transport': 'ip_tcp', 'redis.search.index': 'idx:test_vss', 'redis.search.query': '@name:test', 'redis.search.total': 0}).get
E        +      where mappingproxy({'db.statement': 'FT.SEARCH ? ? ? ? ?', 'db.redis.args_length': 6, 'db.system': 'redis', 'db.redis.database_index': 0, 'net.peer.name': 'localhost', 'net.peer.port': 6379, 'net.transport': 'ip_tcp', 'redis.search.index': 'idx:test_vss', 'redis.search.query': '@name:test', 'redis.search.total': 0}) = <opentelemetry.sdk.trace.ReadableSpan object at 0x7f23d9072410>.attributes

Start with TestRedisearchInstrument.test_redis_query and its failing redis.search.total assertion; run the Redis Docker test to reproduce whether the expected search result is available before the query. Done means the test is deterministic and consistently observes the expected total without weakening the instrumentation assertion.