Add default user to allow for default groups and IAM

app/unit/SettingsUnit.js

@@ -13,6 +13,22 @@ class SettingsUnit extends Unit {
         Error.stackTraceLimit = 50
         app.express.set('trust proxy', true)
 
+        const User = this.models.get('auth:User')
+        const user = await User.findOne({is_default_user_for_coreid: true})
+        if ( !user ) {
+            const user = new User({
+                uid: '__coreid_default_user__',
+                provider: 'flitter',
+                block_login: true,
+                first_name: 'Default_User',
+                last_name: 'Default_User',
+                ldap_visible: false,
+                is_default_user_for_coreid: true,
+            })
+
+            await user.save()
+        }
+
         const Setting = this.models.get('Setting')
         const default_settings = this.configs.get('setting.settings')
         for ( const key in default_settings ) {