[BUG] SQL running on V1 engine failed, throw exception "Request id not present in current context"

[penghuo]

Describe the bug

• Query on SQL V1 engine failed, throw exception "Request id not present in current context"
• Similar issue, LOG() function causes the client to hang opendistro-for-elasticsearch/sql#231

To Reproduce

1. Enable V1 engine.

curl -H 'Content-Type: application/json' -X PUT localhost:9200/_opendistro/_sql/settings -d '{
  "persistent" : {"opendistro.sql.engine.new.enabled" : "false"}
}'

2. Set slowlog to 0s.

curl -XPUT "http://localhost:9200/_cluster/settings" -H 'Content-Type: application/json' -d'{ 
  "persistent" : {"opendistro.sql.query.slowlog" : 0}
}'

3. Post query, get exception.

java.lang.IllegalStateException: Request id not present in current context

Root Cause
SQL plugin use log4j ThreadContext to maintain request_id, but OpenSearch security plugin's SecurityFilter clear ThreadContext. Which cause getRequestsId call throw exception.