* Load custom clouds from config file
* Update docs
* Use the correct list of clouds, add test, fix error condition handling
* Remove on custom cloud from sample.ini and docs
* Remove unnecessary else block
* Use cached json instead of serializing with each request
* Update grafana-azure-sdk-go version to v2.0.4
* update configure-grafana entry for clouds_config
* fix lint errors
* fix lint errors
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Co-authored-by: Jeremy Angel (from Dev Box) <jeremyangel@microsoft.com>