WP143: #1362: ConfigUibOverride missing interface implimentations

 - Method Drupal\uib_common_ui\Config\ConfigUibOverride::getCacheSuffix()
  should return string but return statement is missing.
 - Method Drupal\uib_common_ui\Config\ConfigUibOverride::getCacheableMetadata()
  should return Drupal\Core\Cache\CacheableMetadata but  return statement
  is missing.

src/Config/ConfigUibOverride.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\uib_common_ui\Config;
 
+use Drupal\Core\Cache\CacheableMetadata;
 use Drupal\Core\Config\ConfigFactoryOverrideInterface;
 use Drupal\Core\Config\StorageInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
@@ -33,10 +34,8 @@ class ConfigUibOverride implements ConfigFactoryOverrideInterface {
    */
   public function loadOverrides($names): array {
     if (in_array('gin_login.settings', $names, TRUE)) {
-      // Get the absolute path to the module and append the relative logo path.
       $module_path = $this->moduleHandler->getModule('uib_common_ui')->getPath();
       $logo_path = $module_path . '/public/image/uib_login_logo.svg';
-
       $overrides['gin_login.settings']['logo'] = ['path' => $logo_path];
     }
 
@@ -47,7 +46,7 @@ class ConfigUibOverride implements ConfigFactoryOverrideInterface {
    * {@inheritDoc}
    */
   public function getCacheSuffix() {
-    // @todo Implement getCacheSuffix() method.
+    return '';
   }
 
   /**
@@ -61,7 +60,7 @@ class ConfigUibOverride implements ConfigFactoryOverrideInterface {
    * {@inheritDoc}
    */
   public function getCacheableMetadata($name) {
-    // @todo Implement getCacheableMetadata() method.
+    return new CacheableMetadata();
   }
 
 }