Update workgroup api response structure

Author: pookmish

src/Service/WorkgroupApi.php

@@ -202,7 +202,7 @@ protected function callApi(string $workgroup = NULL, string $sunet = NULL): ?arr
   public function getAllUserWorkgroups(string $authname): array {
     $workgroup_names = [];
     if ($user_data = $this->callApi(NULL, $authname)) {
-      foreach ($user_data['results'] as $user_member) {
+      foreach ($user_data['members'] as $user_member) {
         $workgroup_names[] = $user_member['name'];
       }
     }

tests/src/Unit/Service/WorkgroupApiTest.php

@@ -86,13 +86,13 @@ public function guzzleRequestCallback($method, $url, $options) {
     switch ($options['query']['id']) {
       case 'uit:sws':
         $body = [
-          'results' => [],
+          'members' => [],
         ];
         break;
 
       case $this->authname:
         $body = [
-          'results' => [['name' => 'valid:workgroup']],
+          'members' => [['name' => 'valid:workgroup']],
         ];
         break;