improve docs for aggregator config behavior regarding update_interval

[bernhardreiter]

The current description for configuration of update_intevall can be improved:

If a provider's domain starts with https:// its considered a publisher.
These publishers are added to the csaf_publishers list instead of the csaf_providers list which was used before.

The mandatory value of update_interval can be configured for each publisher (provider) individually. If not given it falls back
to the global update_interval. If this is not given either the default is "on best effort".

• the "before" should be removed or clarified
• it is less clear which is a config options and which is a aggregator.json value. An which is mandatory.
• inconsistency with "rate" which can also be given in each section, but is listed in the main section and the provider section.
• useful would be a value in the example
• needs a small test as UpdateInterval *string does not have a toml string, while Rate has in the code.

[tschmidtb51]

Also clarify the three options:

• for each entry
• configured default
• internal default

See the discussion in https://github.com/csaf-poc/csaf_distribution/pull/318#discussion_r1088711209

[bernhardreiter]

@s-l-teichmann from reading the code,why does https://github.com/csaf-poc/csaf_distribution/blob/05ad714619184a1d2a35000046ce1fafe7f731b6/cmd/csaf_aggregator/config.go#L90 not have a toml string for deserialisation?

[bernhardreiter]

@s-l-teichmann LockFile does not seem to have a default, which means that there is no locking in the default configuration, is that intentional?

[s-l-teichmann]

@s-l-teichmann from reading the code,why does

https://github.com/csaf-poc/csaf_distribution/blob/05ad714619184a1d2a35000046ce1fafe7f731b6/cmd/csaf_aggregator/config.go#L90

not have a toml string for deserialisation?

This is clearly an oversight. Should be fixed.

[s-l-teichmann]

@s-l-teichmann LockFile does not seem to have a default, which means that there is no locking in the default configuration, is that intentional?

This is intentional.

[bernhardreiter]

@s-l-teichmann LockFile does not seem to have a default, which means that there is no locking in the default configuration, is that intentional?

This is intentional.

Split out into #344

[bernhardreiter]

Resolved with #342 merged.