Rollback to use testing branch and 389DS 2.0.x

389-ds-base-2.1 requires glibc-2.30 or higher. We can't ship it on EL8,
because it has an older glibc.

389-directory-server.yaml

@@ -0,0 +1,30 @@
+---
+document: modulemd
+version: 2
+data:
+  stream: next
+  summary: 389 Directory Server
+  description: >-
+    389 Directory Server is an LDAPv3 compliant server.
+  license:
+    module:
+      - MIT
+  dependencies:
+    - buildrequires:
+        platform: [el8]
+      requires:
+        platform: [el8]
+  profiles:
+    default:
+      rpms:
+        - 389-ds-base
+        - cockpit-389-ds
+    minimal:
+      rpms:
+        - 389-ds-base
+  components:
+    rpms:
+      389-ds-base:
+        rationale: Package in api
+        ref: testing
+        arches: [ x86_64 ]