Added LOG4J-JNDI signal

ngwaf-rulesadded

Added Attack Signal: LOG4J-JNDI (Beta): Detects Log4Shell exploit attempts using SmartParse (Requires agent >= 4.27.0).

Prior change: Added SITE-FLAGGED-IP signal

Following change: Added virtual patches for CVE-2022-22963 and CVE-2022-22965