[qualys_gav]: Implement API rate limits

[clement-fouque]

Integration Name

Qualys Global AssetView [qualys_gav]

Dataset Name

qualys_gav.issues

Integration Version

0.2.0

Agent Version

9.2.0-SNAPSHOT

OS Version and Architecture

elastic-package (docker)

User Goal

Manage Qualys API rate limit in the integration

Existing Features

No

What did you see?

I've seen this error message:

"error": {
      "code": "429",
      "id": "429 Too Many Requests",
      "message": "POST: https://gateway.qg2.apps.qualys.com/rest/2.0/search/am/asset429 Too Many Requests (429)"
    },

Anything else?

Qualys API rate limits documentation: https://docs.qualys.com/en/csam/api/get_started/api_rate_limits.htm

[elasticmachine]

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

[clement-fouque]

For information, @/efd6 implemented rate limiting on the Qualys VMDR integration few months ago: #14899