feat (molgenis-vault): Add backup cronjob

Needs to run under service account created by the etcd-operator subchart so there's some template magic needed to figure out what it's called.

molgenis-vault/resources/backup.yaml

@@ -1,12 +0,0 @@
-apiVersion: "etcd.database.coreos.com/v1beta2"
-kind: "EtcdBackup"
-metadata:
-  name: backup
-  namespace: "vault-operator"
-spec:
-  etcdEndpoints: ["https://vault-etcd-client:2379"]
-  storageType: ABS
-  clientTLSSecret: vault-etcd-client-tls
-  abs:
-    path: vault/backup
-    absSecret: abs

molgenis-vault/resources/restore.yaml

@@ -1,3 +1,4 @@
+# Use kubectl create -f restore.yaml to manually execute a restore of the vault
 apiVersion: "etcd.database.coreos.com/v1beta2"
 kind: "EtcdRestore"
 metadata:
@@ -10,5 +11,5 @@ spec:
     name: vault-etcd
   backupStorageType: ABS
   abs:
-    path: vault/backup
+    path: vault/backup-<specify the backup name>
     absSecret: abs