fix molecule destroy playbook

molecule/centos7/destroy.yml

@@ -5,10 +5,14 @@
   gather_facts: false
   no_log: "{{ molecule_no_log }}"
   tasks:
+    - name: Check existing instance config file
+      stat:
+        path: "{{ molecule_instance_config }}"
+      register: cfg
+
     - name: Populate the instance config
       set_fact:
-        instance_conf_file: "{{ lookup('file', molecule_instance_config, errors='ignore') | from_yaml }}"
+        instance_conf: "{{ (lookup('file', molecule_instance_config) | molecule_from_yaml) if cfg.stat.exists else [] }}"
-        instance_conf: "{{ instance_conf_file | default([]) }}"
 
     - name: Destroy molecule instance(s)
       hcloud_server:
@@ -28,6 +32,9 @@
       retries: 300
       loop: "{{ server.results }}"
 
+    - pause:
+        seconds: 5
+
     - name: Destroy volume(s)
       hcloud_volume:
         name: "{{ item.instance }}"