Fix yamllint warnings

Author: lfrancke

test/stack/02-create-kerberos-secretclass.yaml

@@ -2,19 +2,19 @@
 apiVersion: secrets.stackable.tech/v1alpha1
 kind: SecretClass
 metadata:
-    name: kerberos-default
+  name: kerberos-default
 spec:
-    backend:
-      kerberosKeytab:
-        realmName: CLUSTER.LOCAL
-        kdc: krb5-kdc.default.svc.cluster.local
-        admin:
-          mit:
-            kadminServer: krb5-kdc.default.svc.cluster.local
-        adminKeytabSecret:
-          namespace: default
-          name: secret-operator-keytab
-        adminPrincipal: stackable-secret-operator
+  backend:
+    kerberosKeytab:
+      realmName: CLUSTER.LOCAL
+      kdc: krb5-kdc.default.svc.cluster.local
+      admin:
+        mit:
+          kadminServer: krb5-kdc.default.svc.cluster.local
+      adminKeytabSecret:
+        namespace: default
+        name: secret-operator-keytab
+      adminPrincipal: stackable-secret-operator
 ---
 apiVersion: v1
 kind: Secret

test/stack/05-opa.yaml

@@ -58,4 +58,4 @@ spec:
     pullPolicy: IfNotPresent
   servers:
     roleGroups:
-      default: {}
+      default: { }