fix: correct credentials structure

Author: bilboque

src/Identity/v3/Api.php

@@ -694,6 +694,7 @@ public function postCredentials(): array
         return [
             'method' => 'POST',
             'path'   => 'credentials',
+            'jsonKey' => 'credential',
             'params' => [
                 'blob'      => $this->params->blob(),
                 'projectId' => $this->params->projectId(),
@@ -726,6 +727,7 @@ public function patchCredential(): array
         return [
             'method' => 'PATCH',
             'path'   => 'credentials/{id}',
+            'jsonKey' => 'credential',
             'params' => ['id' => $this->params->idUrl('credential')] + $this->postCredentials()['params'],
         ];
     }

tests/unit/Identity/v3/Models/CredentialTest.php

@@ -34,8 +34,10 @@ public function test_it_updates()
         $this->credential->projectId = 'bar';
 
         $expectedJson = [
-            'type' => 'foo',
-            'project_id' => 'bar',
+            'credential' => [
+                'type'       => 'foo',
+                'project_id' => 'bar',
+            ]
         ];
 
         $this->mockRequest('PATCH', 'credentials/CRED_ID', 'cred', $expectedJson, []);

tests/unit/Identity/v3/ServiceTest.php

@@ -501,17 +501,19 @@ public function test_it_gets_group()
     public function test_it_creates_credential()
     {
         $userOptions = [
-            'blob'      => "{\"access\":\"--access-key--\",\"secret\":\"--secret-key--\"}",
-            'projectId' => 'project_id',
-            'type'      => 'ec2',
-            'userId'    => 'user_id'
+                'blob'      => "{\"access\":\"--access-key--\",\"secret\":\"--secret-key--\"}",
+                'projectId' => 'project_id',
+                'type'      => 'ec2',
+                'userId'    => 'user_id',
         ];
 
         $userJson = [
-            'blob'       => $userOptions['blob'],
-            'project_id' => $userOptions['projectId'],
-            'type'       => $userOptions['type'],
-            'user_id'    => $userOptions['userId'],
+            'credential' => [
+                'blob'       => $userOptions['blob'],
+                'project_id' => $userOptions['projectId'],
+                'type'       => $userOptions['type'],
+                'user_id'    => $userOptions['userId'],
+            ],
         ];
 
         $this->mockRequest('POST', 'credentials', 'cred', $userJson);