Hardcode object storage settings

- direct_upload is false because files need to be encrypted before
  uploading
- background_upload is false because files need to be available
  immediately
- proxy_download is true because downloads need to be decrypted
  before being sent to the user

app/uploaders/terraform_state_uploader.rb

@@ -21,4 +21,18 @@ class TerraformStateUploader < GitlabUploader
   def key
     OpenSSL::HMAC.digest('SHA256', Gitlab::Application.secrets.db_key_base, project_id.to_s)
   end
+
+  class << self
+    def direct_upload_enabled?
+      false
+    end
+
+    def background_upload_enabled?
+      false
+    end
+
+    def proxy_download_enabled?
+      true
+    end
+  end
 end

spec/uploaders/terraform_state_uploader_spec.rb

@@ -43,4 +43,22 @@ describe TerraformStateUploader do
       expect(subject.read).to eq(fixture_file('terraform.tfstate'))
     end
   end
+
+  describe '.direct_upload_enabled?' do
+    it 'returns false' do
+      expect(described_class.direct_upload_enabled?).to eq(false)
+    end
+  end
+
+  describe '.background_upload_enabled?' do
+    it 'returns false' do
+      expect(described_class.background_upload_enabled?).to eq(false)
+    end
+  end
+
+  describe '.proxy_download_enabled?' do
+    it 'returns true' do
+      expect(described_class.proxy_download_enabled?).to eq(true)
+    end
+  end
 end