use stringslice for users in onedrive (#2042)

## Type of change

- [x] 🐛 Bugfix

## Issue(s)

* #2041

## Test Plan

- [x] 💪 Manual

CHANGELOG.md

@@ -14,8 +14,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-- Fixed issue where repository connect progress bar was clobbering backup/restore operation output.
-- Fixed issue where a `backup create exchange` produced one backup record per data type.
+- Issue where repository connect progress bar was clobbering backup/restore operation output.
+- Issue where a `backup create exchange` produced one backup record per data type.
+- Specifying multiple users in a onedrive backup (ex: `--user a,b,c`) now properly delimits the input along the commas.
 
 ### Known Issues
 

src/cli/backup/onedrive.go

@@ -83,7 +83,7 @@ func addOneDriveCommands(cmd *cobra.Command) *cobra.Command {
 		c.Use = c.Use + " " + oneDriveServiceCommandCreateUseSuffix
 		c.Example = oneDriveServiceCommandCreateExamples
 
-		fs.StringArrayVar(&user,
+		fs.StringSliceVar(&user,
 			utils.UserFN, nil,
 			"Backup OneDrive data by user ID; accepts '"+utils.Wildcard+"' to select all users. (required)")
 		options.AddOperationFlags(c)