Fix permission error

Fix the following error:

  File "/opt/plone/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Zope2/App/startup.py", line 52, in load_zcml
    load_site()
  File "/opt/plone/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Zope2/App/zcml.py", line 46, in load_site
    _context = xmlconfig.file(site_zcml)
  File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 651, in file
    context.execute_actions()
  File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 626, in execute_actions
    callable(*args, **kw)
  File "/opt/plone/buildout-cache/eggs/AccessControl-2.13.12-py2.7-linux-x86_64.egg/AccessControl/security.py", line 165, in protectClass
    permission = getUtility(IPermission, name=permission_id)
  File "/opt/plone/buildout-cache/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 169, in getUtility
    raise ComponentLookupError(interface, name)
zope.configuration.config.ConfigurationExecutionError: <class 'zope.component.interfaces.ComponentLookupError'>: (<InterfaceClass zope.security.interfaces.IPermission>, u'cmf.ManagePortal')
  in:
  File "/opt/plone/hosted/src/collective.easytemplate/collective/easytemplate/browser/portlets/configure.zcml", line 7.1-16.10
  	<plone:portlet
          name="collective.easytemplate.TemplatedPortlet"
          interface=".interfaces.ITemplatedPortlet"
          assignment=".templated.TemplatedPortletAssignment"
          view_permission="zope2.View"
          edit_permission="cmf.ManagePortal"
          renderer=".templated.TemplatedPortletRenderer"
          addview=".templated.TemplatedPortletAddForm"
          editview=".templated.TemplatedPortletEditForm"
          />