Secrets: encryption encryption storage uses versioning (#108036)

* Secrets: delete unused FakeKeeper

* Secrets: encrypted value storage stores versions

* add version to span

* trigger build

* remove ineffectual assignment

* lint

* drop secret_encrypted_value.uid / add name and version columns

pkg/storage/secret/encryption/testdata/postgres--encrypted_value_create-create.sql

@@ -1,12 +1,14 @@
 INSERT INTO "secret_encrypted_value" (
-  "uid",
   "namespace",
+  "name",
+  "version",
   "encrypted_data",
   "created",
   "updated"
 ) VALUES (
-  'abc123',
   'ns',
+  'n1',
+  1,
   '[115 101 99 114 101 116]',
   1234,
   5678