add upgrade step for moderator_email setting

svn path=/plone.app.discussion/branches/1.x/; revision=48555

plone/app/discussion/configure.zcml

@@ -27,6 +27,7 @@
     <include file="permissions.zcml" />
     <include file="notifications.zcml" />
     <include file="subscribers.zcml" />
+    <include file="upgrades.zcml" />
     <include package=".browser" />
 
     <i18n:registerTranslations directory="locales" />

plone/app/discussion/profiles/default/metadata.xml

@@ -1,5 +1,5 @@
 <metadata>
- <version>1</version>
+ <version>2</version>
  <dependencies>
   <dependency>profile-plone.app.registry:default</dependency>
  </dependencies>

plone/app/discussion/upgrades.py

@@ -0,0 +1,8 @@
+from zope.component import getUtility
+from plone.registry.interfaces import IRegistry
+from plone.app.discussion.interfaces import IDiscussionSettings
+
+
+def update_registry(context):
+    registry = getUtility(IRegistry)
+    registry.registerInterface(IDiscussionSettings)

plone/app/discussion/upgrades.zcml

@@ -0,0 +1,14 @@
+<configure
+    xmlns="http://namespaces.zope.org/zope"
+    xmlns:genericsetup="http://namespaces.zope.org/genericsetup">
+  
+  <genericsetup:upgradeStep
+      source="*"
+      destination="2"
+      title="Update plone.app.discussion setting registry"
+      description=""
+      profile="plone.app.discussion:default"
+      handler=".upgrades.update_registry"
+      />
+  
+</configure>