CDRIVER-3577 update long ns test

Author: kevinAlbs

src/libmongoc/tests/test-mongoc-long-namespace.c

@@ -499,15 +499,15 @@ run_test (void *ctx)
    one_test (&test_fixture);
    test_fixture_cleanup (&test_fixture);
    /* Large collection name. */
-   test_fixture_init (&test_fixture, 32, 500);
+   test_fixture_init (&test_fixture, 32, 100);
    one_test (&test_fixture);
    test_fixture_cleanup (&test_fixture);
    /* Maximum valid database name is still 64 characters. */
    test_fixture_init (&test_fixture, 63, 32);
    one_test (&test_fixture);
    test_fixture_cleanup (&test_fixture);
    /* Large for both names. */
-   test_fixture_init (&test_fixture, 63, 500);
+   test_fixture_init (&test_fixture, 63, 100);
    one_test (&test_fixture);
    test_fixture_cleanup (&test_fixture);
 }