- Introduced traits, `ParquetMetrics` and `SystemInfoProvider` to enable
writing easier tests
- Uses mockito for code that depends on reqwest::Client and also uses
mockall to generally mock any traits like `SystemInfoProvider`
- Minor updates to docs
- added mechanism within PersistedFile to expose parquet file related
metrics. The details are updated when new snapshot is generated and
also when all snapshots are loaded when the process starts up
- at the point of creating the telemetry payload these parquet metrics
are looked up before sending it to the server.
Closes: https://github.com/influxdata/influxdb/issues/25418
praveen-influx