Move savanna under openstack org

Savanna was accepted as an incubated project several days ago.

* http://eavesdrop.openstack.org/meetings/tc/2013/tc.2013-09-24-20.01.html
* http://lists.openstack.org/pipermail/openstack/2013-September/001609.html

Change-Id: I95d69d5df68eaad51ee49e706c2ea131360bb4bb

modules/openstack_project/files/gerrit/acls/stackforge/savanna.config

@@ -1,18 +0,0 @@
-[access "refs/*"]
-        owner = group Administrators
-        create = group savanna-core
-        pushTag = group savanna-core
-[access "refs/heads/*"]
-        label-Code-Review = -2..+2 group savanna-core
-        label-Approved = +0..+1 group savanna-core
-        workInProgress = group savanna-core
-[access "refs/heads/stable/*"]
-        exclusiveGroupPermissions = label-Code-Review label-Approved
-        label-Code-Review = -2..+2 group savanna-core
-        label-Approved = +0..+1 group savanna-core
-        label-Code-Review = -1..+1 group Registered Users
-[receive]
-        requireChangeId = true
-        requireContributorAgreement = true
-[submit]
-        mergeContent = true