[Cloudflare Logpush] Support the new 'WAF*AttackScore' HTTP Request log fields

[chemamartinez]

Cloudflare has added 4 new WAF (Web Application Firewall) AttackScore fields to their HTTP Request logs that shares the generated score produced by their WAF detection module. The 4 new fields are:

• WAFAttackScore
• WAFRCEAttackScore
• WAFSQLiAttackScore
• WAFXSSAttackScore.

Comparing the fieldset reference against the mapped fields in the Cloudflare Logpush integration, we are also missing the following fields:

• CacheReserveUsed
• ClientRegionCode
• ContentScanObjResults
• ContentScanObjTypes
• LeakedCredentialCheckResult

[elasticmachine]

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)