fix EMFILE errors

[abretaud]

Fixing this kind of errors that seem to happen because of mongod.log file rotation

 node:events:360
     throw err; // Unhandled 'error' event
     ^
 
 Error [ERR_UNHANDLED_ERROR]: Unhandled error. ("watch for /root/db/log/mongod.log failed: Error: EMFILE: too many open files, watch '/root/db/log/mongod.log'")
     at new NodeError (node:internal/errors:329:5)
     at Tail.emit (node:events:358:17)
     at new Tail (/usr/local/share/genoboo-0.4.18-0/node_modules/tail/lib/tail.js:71:18)
     at checkMongoLog (/usr/local/share/genoboo-0.4.18-0/genoboo.js:84:16)
     at Socket.<anonymous> (/usr/local/share/genoboo-0.4.18-0/genoboo.js:138:5)
     at Socket.emit (node:events:369:20)
     at addChunk (node:internal/streams/readable:313:12)
     at readableAddChunk (node:internal/streams/readable:288:9)
     at Socket.Readable.push (node:internal/streams/readable:227:10)
     at Pipe.onStreamRead (node:internal/stream_base_commons:190:23) {
   code: 'ERR_UNHANDLED_ERROR',
   context: "watch for /root/db/log/mongod.log failed: Error: EMFILE: too many open files, watch '/root/db/log/mongod.log'"
 }