make skydive working with folder created by tripleo-admin

Makes /var/lib/mistral/overcloud/skydive be owned by
tripleo-admin so that playbook and vars files can be written.

Change-Id: I72e396747f487a76822f18906edfb8c015b7dd36

extraconfig/services/skydive-analyzer.yaml

@@ -72,9 +72,11 @@ outputs:
           when: step == '5'
           block:
             - name: create skydive temp dirs
+              become: true
               file:
                 path: "{{item}}"
                 state: directory
+                owner: "{{ansible_user}}"
               with_items:
                 - "{{playbook_dir}}/skydive"