e2e: do not create a single-item list

The deployment of the Vault ConfigMap for the init-scripts job contains
a List with a single Item. This can be cleaned up to just be a ConfigMap
(without the list structure around it).

Signed-off-by: Niels de Vos <ndevos@redhat.com>

examples/kms/vault/vault.yaml

@@ -60,8 +60,9 @@ spec:
               name: vault-api
 ---
 apiVersion: v1
-items:
-  - apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: init-scripts
 data:
   init-vault.sh: |
     set -x -e
@@ -107,13 +108,6 @@ items:
       token_reviewer_jwt=@${SERVICE_ACCOUNT_TOKEN_PATH}/token \
       kubernetes_host="${K8S_HOST}" \
       disable_iss_validation=true
-    kind: ConfigMap
-    metadata:
-      creationTimestamp: null
-      name: init-scripts
-kind: List
-metadata: {}
-
 ---
 apiVersion: batch/v1
 kind: Job