Adding modify environment method

src/CloudApi/Client.php

@@ -558,6 +558,30 @@ public function environment($environmentUuid)
         );
     }
 
+    /**
+     * Modifies configuration settings for an environment.
+     *
+     * @param string $environmentUuid
+     * @param array $config
+     * @return OperationResponse
+     */
+    public function modifyEnvironment($environmentUuid, array $config)
+    {
+
+        $options = [
+          'form_params' => $config,
+        ];
+
+        return new OperationResponse(
+            $this->connector->request(
+                'put',
+                "/environments/${environmentUuid}",
+                $this->query,
+                $options
+            )
+        );
+    }
+
     /**
      * Renames an environment.
      *

src/CloudApi/ClientInterface.php

@@ -261,6 +261,15 @@ public function environments($applicationUuid);
      */
     public function environment($environmentUuid);
 
+    /**
+     * Modifies configuration settings for an environment.
+     *
+     * @param string $environmentUuid
+     * @param array $config
+     * @return OperationResponse
+     */
+    public function modifyEnvironment($environmentUuid, array $config);
+
     /**
      * Renames an environment.
      *

tests/Endpoints/EnvironmentsTest.php

@@ -61,6 +61,20 @@ public function testGetEnvironment()
         }
     }
 
+    public function testModifyEnvironment()
+    {
+      $response = $this->getPsr7JsonResponseForFixture('Endpoints/modifyEnvironment.json');
+
+      $client = $this->getMockClient($response);
+
+      /** @var \AcquiaCloudApi\CloudApi\ClientInterface $client */
+      $result = $client->modifyEnvironment('24-a47ac10b-58cc-4372-a567-0e02b2c3d470', ['version' => '7.2']);
+
+      $this->assertInstanceOf('\AcquiaCloudApi\Response\OperationResponse', $result);
+
+      $this->assertEquals('The environment configuration is being updated.', $result->message);
+    }
+
     public function testRenameEnvironment()
     {
         $response = $this->getPsr7JsonResponseForFixture('Endpoints/renameEnvironment.json');

tests/Fixtures/Endpoints/modifyEnvironment.json

@@ -0,0 +1,3 @@
+{
+  "message": "The environment configuration is being updated."
+}