[MM-32234] Fix config.json getting reset (#16805)

* Add support for read-only config stores

* Allow read/write config store for plugin commands that require it

cmd/mattermost/commands/plugin.go

@@ -104,7 +104,7 @@ func init() {
 }
 
 func pluginAddCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}
@@ -134,7 +134,7 @@ func pluginAddCmdF(command *cobra.Command, args []string) error {
 }
 
 func pluginDeleteCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}
@@ -158,7 +158,7 @@ func pluginDeleteCmdF(command *cobra.Command, args []string) error {
 }
 
 func pluginEnableCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}
@@ -182,7 +182,7 @@ func pluginEnableCmdF(command *cobra.Command, args []string) error {
 }
 
 func pluginDisableCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}
@@ -265,7 +265,7 @@ func pluginPublicKeysCmdF(command *cobra.Command, args []string) error {
 }
 
 func pluginAddPublicKeyCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}
@@ -296,7 +296,7 @@ func pluginAddPublicKeyCmdF(command *cobra.Command, args []string) error {
 }
 
 func pluginDeletePublicKeyCmdF(command *cobra.Command, args []string) error {
-	a, err := InitDBCommandContextCobra(command)
+	a, err := InitDBCommandContextCobraReadWrite(command)
 	if err != nil {
 		return err
 	}