erp5_document_scanner_ui_test: Disable test because in some cases we don't have web cam

Like in test nodes

bt5/erp5_document_scanner_ui_test/PathTemplateItem/portal_tests/renderjs_erp5_document_scanner_zuite/testScanDocument.zpt

@@ -93,6 +93,7 @@
   <td>//a[text()="Scan Document"]</td>
   <td></td>
 </tr>
+<tal:block tal:condition="here/Base_enableDocumentScannerTest">
 <tr>
   <td>click</td>
   <td>//a[text()="Scan Document"]</td>
@@ -248,6 +249,7 @@
   <td>Done</td>
   <td></td>
 </tr>
+</tal:block>
 </tbody></table>
 </body>
 </html>
\ No newline at end of file

bt5/erp5_document_scanner_ui_test/SkinTemplateItem/portal_skins/erp5_document_scanner_ui_test/Base_enableDocumentScannerTest.py

+return False

bt5/erp5_document_scanner_ui_test/SkinTemplateItem/portal_skins/erp5_document_scanner_ui_test/Base_enableDocumentScannerTest.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>Script_magic</string> </key>
+            <value> <int>3</int> </value>
+        </item>
+        <item>
+            <key> <string>_bind_names</string> </key>
+            <value>
+              <object>
+                <klass>
+                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
+                </klass>
+                <tuple/>
+                <state>
+                  <dictionary>
+                    <item>
+                        <key> <string>_asgns</string> </key>
+                        <value>
+                          <dictionary>
+                            <item>
+                                <key> <string>name_container</string> </key>
+                                <value> <string>container</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_context</string> </key>
+                                <value> <string>context</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_m_self</string> </key>
+                                <value> <string>script</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_subpath</string> </key>
+                                <value> <string>traverse_subpath</string> </value>
+                            </item>
+                          </dictionary>
+                        </value>
+                    </item>
+                  </dictionary>
+                </state>
+              </object>
+            </value>
+        </item>
+        <item>
+            <key> <string>_params</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>Base_enableDocumentScannerTest</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>