fix oas-single-sign-on-variables.yaml template

install/templates/oas-single-sign-on-variables.yaml

@@ -4,7 +4,7 @@ kind: Secret
 metadata:
   name: oas-single-sign-on-variables
 data:
-  userbackend_admin_username: {{ "admin" | b64encode }}
+  userbackend_admin_username: "{{ "admin" | b64encode }}"
   userbackend_admin_password: "{{ 32 | generate_password | b64encode }}"
   userbackend_postgres_password: "{{ 32 | generate_password | b64encode }}"
   hydra_system_secret: "{{ 32 | generate_password | b64encode }}"