* Add Azure auto-discovery configuration fields
* Init databases if azure matchers are in config
* Use AzureMatchers in db service
* Use all azure subscriptions/resource groups if omitted in matcher
* Add azure config tests
* Go mod tidy to update dependencies
* Add azure response error conversion
* Check for azure access denied and give a helpful error message
* Add azure subscriptions api
* Add azure mysql/postgresql api and wrappers
* Test generic db server for azure
* Make server properties its own type
* Convert server types manually instead of via json
* Move server list method selection logic out of api client
* Update azure db server tests
* Fixup merge
* Update comments
* Update more comments and remove junk code
* Move all azure api into lib/cloud/azure
* Update state and version checks
* Add mutex to subscription client for caching, just in case
* Update lib/cloud/azure/db_server_test.go
Co-authored-by: Marek Smoliński <marek@goteleport.com>
* Update lib/cloud/azure/subscriptions_test.go
Co-authored-by: Marek Smoliński <marek@goteleport.com>
* Update lib/cloud/azure/db_server_test.go
Co-authored-by: Marek Smoliński <marek@goteleport.com>
* Update lib/cloud/azure/db_server_test.go
Co-authored-by: Marek Smoliński <marek@goteleport.com>
* Update lib/cloud/azure/db_server_test.go
Co-authored-by: Marek Smoliński <marek@goteleport.com>
* Rename azure subscription client and remove sub ID caching
* Add reference links for azure db ports
* Move indirect dep into group
* Wrap all converted azure response errors
* Remove unreachable panic
* Godoc DBServer
* Remove maxPages arg to azure client funcs
* Gofmt
* Spacing between copyright and package
* import order
Co-authored-by: Marek Smoliński <marek@goteleport.com>
Jakub Nyckowski