Add support for temporary URL for Swift driver

Signed-off-by: Sylvain Baubeau <sbaubeau@redhat.com>

docs/storage-drivers/swift.md

@@ -93,6 +93,16 @@ An implementation of the `storagedriver.StorageDriver` interface that uses [Open
     </p>
     </td>
 </tr>
+<tr>
+    <td>
+    <code>trustid</code>
+    </td>
+    <td>
+    <p>
+    Optionally, your OpenStack trust id for Identity v3 API.
+    </p>
+    </td>
+</tr>
 <tr>
     <td>
     <code>insecureskipverify</code>
@@ -133,4 +143,58 @@ An implementation of the `storagedriver.StorageDriver` interface that uses [Open
     </p>
     </td>
 </tr>
+<tr>
+    <td>
+    <code>secretkey</code>
+    </td>
+    <td>
+    <p>
+    Optionally, the secret key used to generate temporary URLs.</p>
+    </p>
+    </td>
+</tr>
+<tr>
+    <td>
+    <code>accesskey</code>
+    </td>
+    <td>
+    <p>
+    Optionally, the access key to generate temporary URLs. It is used by HP Cloud Object Storage in addition to the `secretkey` parameter.</p>
+    </p>
+    </td>
+</tr>
+</table>
+
+The features supported by the Swift server are queried by requesting the `/info` URL on the server. In case the administrator
+disabled that feature, the configuration file can specify the following optional parameters :
+
+<table>
+<tr>
+    <td>
+    <code>tempurlcontainerkey</code>
+    </td>
+    <td>
+    <p>
+    Specify whether to use container secret key to generate temporary URL when set to true, or the account secret key otherwise.</p>
+    </p>
+    </td>
+</tr>
+<tr>
+    <td>
+    <code>tempurlmethods</code>
+    </td>
+    <td>
+    <p>
+    Array of HTTP methods that are supported by the TempURL middleware of the Swift server. Example:</p>
+    <code>
+    - tempurlmethods:
+      - GET
+      - PUT
+      - HEAD
+      - POST
+      - DELETE
+    </code>
+    </p>
+    </td>
+</tr>
 </table>