Squash EE migrations prior to 2014-03-19

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

ee/db/migrate/20130802124933_add_ldap_settings_to_group.rb

-class AddLdapSettingsToGroup < ActiveRecord::Migration
-  def change
-    add_column :namespaces, :ldap_cn, :string, null: true
-  end
-end

ee/db/migrate/20130809090140_add_ldap_access_to_group.rb

-class AddLdapAccessToGroup < ActiveRecord::Migration
-  def change
-    add_column :namespaces, :ldap_access, :integer, null: true
-  end
-end

ee/db/migrate/20140319135450_create_git_hooks.rb → ee/db/migrate/20140319135450_init_ee_schema.rb

 # rubocop:disable Migration/Timestamps
-class CreateGitHooks < ActiveRecord::Migration
+class InitEESchema < ActiveRecord::Migration
   DOWNTIME = false
 
-  def change
+  def up
+    add_column :namespaces, :ldap_cn, :string, null: true
+    add_column :namespaces, :ldap_access, :integer, null: true
+
     create_table :git_hooks do |t|
       t.string :force_push_regex
       t.string :delete_branch_regex
@@ -13,4 +16,8 @@ class CreateGitHooks < ActiveRecord::Migration
       t.timestamps null: true
     end
   end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration, "The initial migration is not revertable"
+  end
 end