812346 - fixing org deletion envrionment error

we need to delete environments in reverse
order of the promotion paths so that
we do not  leave any orphaned environments
which causes the deletion to fail
(cherry picked from commit 20794eb)

src/app/models/glue/candlepin/owner.rb

@@ -50,7 +50,12 @@ def del_owner
 
     def del_environments
       Rails.logger.debug _("All environments for owner %s in candlepin") % name
-      self.environments.destroy_all
+      #need to destroy environments in the proper order to not leave orphans
+      self.promotion_paths.each{|path|
+        path.reverse.each{|env|
+          env.reload.destroy #if we do not reload, the environment may think its successor still exists
+        }
+      }
       self.library.destroy
       self.library = nil
       return true

src/spec/models/organization_spec.rb

@@ -105,5 +105,16 @@
       KTEnvironment.where(:name => env_name).first.should == @env2
       KTEnvironment.where(:name => env_name).size.should == 1
     end
+
+    it "can delete an org where there is a full environment path" do
+       dev = KTEnvironment.create!(:name => "Dev", :organization => @organization, :prior => @organization.library)
+       qa = KTEnvironment.create!(:name => "QA", :organization => @organization, :prior => dev)
+       prod =  KTEnvironment.create!(:name => "prod", :organization => @organization, :prior => qa)
+       @organization = @organization.reload
+       @organization.destroy
+       lambda{Organization.find(@organization.id)}.should raise_error(ActiveRecord::RecordNotFound)
+       KTEnvironment.where(:name =>'Dev').size.should == 0 
+    end
+
   end
 end