Migrate config to KV data format (#8392)

- adding oauth support to MinIO browser (#8400) by @kanagaraj
- supports multi-line get/set/del for all config fields
- add support for comments, allow toggle
- add extensive validation of config before saving
- support MinIO browser to support proper claims, using STS tokens
- env support for all config parameters, legacy envs are also
  supported with all documentation now pointing to latest ENVs
- preserve accessKey/secretKey from FS mode setups
- add history support implements three APIs
  - ClearHistory
  - RestoreHistory
  - ListHistory
- add help command support for each config parameters
- all the bug fixes after migration to KV, and other bug
  fixes encountered during testing.

cmd/peer-rest-server.go

@@ -61,7 +61,7 @@ func getServerInfo() (*ServerInfoData, error) {
 			CommitID:     CommitID,
 			DeploymentID: globalDeploymentID,
 			SQSARN:       globalNotificationSys.GetARNList(),
-			Region:       globalServerConfig.GetRegion(),
+			Region:       globalServerRegion,
 		},
 	}, nil
 }