Cockroach support - tid conflicts

[bloodbare]

We are experiencing lots of conflicts errors without the rediscache module. The tid allocation does seems to be enough accurate or fast:

  File "/usr/local/lib/python3.6/site-packages/guillotina/factory/app.py", line 84, in _handle
    return await super()._handle(request)
  File "/usr/local/lib/python3.6/site-packages/aiohttp/web.py", line 325, in _handle
    resp = yield from handler(request)
  File "/usr/local/lib/python3.6/site-packages/aiohttp/web_middlewares.py", line 93, in impl
    return (yield from handler(request))
  File "/usr/local/lib/python3.6/site-packages/guillotina/traversal.py", line 229, in handler
    await commit(request, warn=False)
  File "/usr/local/lib/python3.6/site-packages/guillotina/transactions.py", line 22, in commit
    await get_tm(request).commit(request)
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction_manager.py", line 100, in commit
    return await shield(self._commit(request=request, txn=txn))
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction_manager.py", line 109, in _commit
    await txn.commit()
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction.py", line 276, in commit
    return await self._commit()
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction.py", line 290, in _commit
    await self.tpc_commit()
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction.py", line 345, in tpc_commit
    await self._store_object(obj, oid)
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/transaction.py", line 331, in _store_object
    await self._manager._storage.store(oid, serial, writer, obj, self)
  File "/usr/local/lib/python3.6/site-packages/guillotina/db/storages/cockroach.py", line 262, in store
    oid, txn, old_serial, writer)
guillotina.exceptions.TIDConflictError: Mismatch of tid of object being updated. This is likely caused by a cache invalidation race condition and should be an edge case. This should resolve on request retry..```

Cockroach version: 1.0.3
Guillotina version: 2.3.17