[2.3.0] Checkmk Werk 16868 created: azure: Fetch metrics in bulk

[//]: # (werk v2) # azure: Fetch metrics in bulk key | value ---------- | --- date | 2024-09-06T15:03:25+00:00 version | 2.3.0p15 class | fix edition | cre component | checks level | 1 compatible | yes Until now, Azure agent fetched metrics for each resource individually. This resulted in many requests made to the Azure API. After the changes in Azure API rate limits it started causing agent timeouts in large environments. Now, the Azure agent fetches metrics in bulk per resource type and region. This way the number of requests is significantly reduced. Since metrics are no longer fetched per resource, parallel execution is also removed together with the `Force agent to run in single thread` option.