cloud: split shepherd up

Change-Id: I8e386d9eaaf17543743e1e8a37a8d71426910d59
Reviewed-on: https://review.monogon.dev/c/monogon/+/2213
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Tested-by: Jenkins CI
diff --git a/cloud/bmaas/bmdb/model/migrations/1698288577_add_providers.down.sql b/cloud/bmaas/bmdb/model/migrations/1698288577_add_providers.down.sql
new file mode 100644
index 0000000..b0b22d0
--- /dev/null
+++ b/cloud/bmaas/bmdb/model/migrations/1698288577_add_providers.down.sql
@@ -0,0 +1,2 @@
+ALTER TYPE provider DROP VALUE 'Lumen';
+ALTER TYPE provider DROP VALUE 'None';