Increase metadata version to 2000.

We need to leave some room for another upgrade step in Plone 5.2.

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

@@ -1,5 +1,5 @@
 <metadata>
- <version>1005</version>
+ <version>2000</version>
  <dependencies>
   <dependency>profile-plone.resource:default</dependency>
   <dependency>profile-plone.app.registry:default</dependency>

plone/app/discussion/upgrades.zcml

@@ -73,26 +73,19 @@
         />
   </genericsetup:upgradeSteps>
 
+  <genericsetup:upgradeSteps
+      source="1999"
+      destination="2000"
+      profile="plone.app.discussion:default">
     <genericsetup:upgradeDepends
-      source="1002"
-      destination="1003"
-      profile="plone.app.discussion:default"
         title="Update controlpanel icon"
         import_steps="controlpanel" />
-
     <genericsetup:upgradeDepends
-      source="1003"
-      destination="1004"
-      profile="plone.app.discussion:default"
         title="Add 'View comments' permission"
         import_steps="rolemap" />
-
     <genericsetup:upgradeStep
-      source="1004"
-      destination="1005"
-      profile="plone.app.discussion:default"
         title="Grant Site Administrator permissions on pending comments"
-      handler=".upgrades.upgrade_comment_workflows"
-      />
+        handler=".upgrades.upgrade_comment_workflows" />
+  </genericsetup:upgradeSteps>
 
 </configure>