extra flag parameter for storage-cli and logging stderr log stream

[serdarozerr]

Context

We introduced log-level support in storage-cli and, by default, route all log output to the stderr stream. On the cloud_controller_ng side, these logs need to be persisted to support troubleshooting or debugging.
In addition, storage-cli now exposes optional flags (e.g. -log-level, -log-file) that must be configurable and passed through from cloud_controller.

Solution

We implemented log-level–aware logging in cloud_controller_ng and ensured that all relevant output is written to cloud_controller_ng.log.
To support flexible configuration, we introduced a new config variable, storage_cli_optional_flags, which allows arbitrary extra flags to be forwarded directly to storage-cli.

The variable is defined as a single string containing the desired flags, for example:

-log-level info -log-file <some-path>/storage_cli.log

• Links to any other associated PRs

  • storage_cli_optional_flags config parameter capi-release#603

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