Adding ability to override max ttl (kubernetes-sigs#1559)

Prior this would fail because we didnt set max ttl for vault temp

roles/vault/defaults/main.yml

@@ -78,13 +78,14 @@ vault_secret_shares: 1
 vault_secret_threshold: 1
 vault_secrets_dir: "{{ vault_base_dir }}/secrets"
 vault_temp_config:
-  default_lease_ttl: "{{ vault_default_lease_ttl }}"
   backend:
     file:
       path: /vault/file
+  default_lease_ttl: "{{ vault_default_lease_ttl }}"
   listener:
     tcp:
       address: "0.0.0.0:{{ vault_port }}"
       tls_disable: "true"
+  max_lease_ttl: "{{ vault_max_lease_ttl }}"
 vault_temp_container_name: vault-temp
 vault_version: 0.6.4