AETHER-3435 remove old sdcore-adapter chart

Change-Id: Iaa63f3a328803d63180bcd1ea00aa582fda9022b
diff --git a/sdcore-adapter/Chart.yaml b/sdcore-adapter/Chart.yaml
new file mode 100644
index 0000000..dc20f06
--- /dev/null
+++ b/sdcore-adapter/Chart.yaml
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2020-present Open Networking Foundation <info@opennetworking.org>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: v2
+name: sdcore-adapter
+kubeVersion: ">=1.17.0"
+type: application
+version: 2.1.2
+appVersion: v2.1.0
+description: Aether SD-Core Adapter
+keywords:
+  - aether
+  - sdcore
+  - adapter
+home: https://www.opennetworking.org/aether/
+maintainers:
+  - name: Aether Ops team
+    email: support@opennetworking.org