Remove global app references (#7433)

* remove global app references

* test fix

* fix api4 test compilation

cmd/platform/ldap.go

@@ -27,7 +27,7 @@ func init() {
 }
 
 func ldapSyncCmdF(cmd *cobra.Command, args []string) error {
-	if err := initDBCommandContextCobra(cmd); err != nil {
+	if _, err := initDBCommandContextCobra(cmd); err != nil {
 		return err
 	}