[QRadar] Bad default QRadar configuration

[Lhorus6]

Description

We had the wrong default URL on our Github. With the current URL, we can only create data (so send IOCs) but not update.

README and conf file to modify

[Lhorus6]

The suggested endpoint is deprecated. So we should see how to do it while always using the endpoint "reference_data_collections".

See https://github.com/OpenCTI-Platform/connectors/issues/2124

Maybe we should use different endpoints to manage the update

[Lhorus6]

Additional note (for the record):

With current version of code, new endpoint cannot be used as it does not have same parameters, e.g.:

• We cannot delete entries by name of the value in new endpoint, we need to extract ID and then pass it.