Support YAML lists of hosts in playbooks.
Support YAML lists of hosts in playbooks.

Reading the docs, I was a bit confused as to how to specify multiple hosts/groups in a playbook.  Being YAML, I assumed a normal YAML list would work:

    ---
    - hosts: [host1, host2]

But this crashes when inventory._matches() assumes hosts is a string.  This patch just checks if hosts is a list, and turns it into a string joined by ';'.
thaim/ansible,thaim/ansible