Enable wal_compression in crash_tests (#10141)

Summary:
Same as title

Pull Request resolved: #10141

Test Plan:
```
export CRASH_TEST_EXT_ARGS=" --wal_compression=zstd"
 make crash_test -j
```

Reviewed By: riversand963

Differential Revision: D37042810

Pulled By: akankshamahajan15

fbshipit-source-id: 53f0793d78241f1b5c954dcc808cb4c0a3e9172a

tools/db_crashtest.py

@@ -174,9 +174,7 @@
     "detect_filter_construct_corruption": lambda: random.choice([0, 1]),
     "adaptive_readahead": lambda: random.choice([0, 1]),
     "async_io": lambda: random.choice([0, 1]),
-    # Temporarily disable wal compression because it causes backup/checkpoint to miss
-    # compressed WAL files.
-    "wal_compression": "none",
+    "wal_compression": lambda: random.choice(["none", "zstd"]),
     "verify_sst_unique_id_in_manifest": 1,  # always do unique_id verification
     "secondary_cache_uri": "",
 }