Fixed: Bug "'int' object is not iterable"

[igormukhingmailcom]

Hi. When you specifying integer values at fail2ban_jails (for example, maxretry: 2 - without quotes - rather than maxretry: "2") role will fail with error 'int' object is not iterable because it was tried to join(,) anything that is not string. It was easy to get that error (don't like write integers with quotes) but not easy to find. Now this fixed. Merge please :)

failed: [dev.cardinalcorp.com] (item={u'name': u'ssh', u'enabled': u'true', u'logpath': u'/var/log/auth.log', u'filter': u'sshd', u'maxretry': 6, u'port': u'ssh'}) => {
    "failed": true, 
    "invocation": {
        "module_args": {
            "dest": "/etc/fail2ban/jail.local.d/ssh.local", 
            "group": "root", 
            "mode": "0644", 
            "owner": "root", 
            "src": "etc/fail2ban/jail.local.d/jail.local.j2"
        }, 
        "module_name": "template"
    }, 
    "item": {
        "enabled": "true", 
        "filter": "sshd", 
        "logpath": "/var/log/auth.log", 
        "maxretry": 6, 
        "name": "ssh", 
        "port": "ssh"
    }, 
    "msg": "AnsibleError: Unexpected templating type error occurred on ({% if item.comment is defined and item.comment %}\n# {{ item.comment }}\n{% endif %}\n[{{ item.name }}]\n{% for key, value in item.iteritems() %}\n{%   if key not in [ 'name', 'filename', 'delete', 'comment', 'action', 'ignoreip' ] %}\n{%     if value is string %}\n{{ \"%-14s = %s\" | format(key, value) }}\n{%     else %}\n{{ \"%-14s = %s\" | format(key, value | join(\",\")) }}\n{%     endif %}\n{%   elif key == 'action' %}\naction         = {{ \"%(\" + value + \")s\" }}\n{%   elif key == 'ignoreip' %}\nignoreip       = {{ value | join(\" \") }}\n{%   endif %}\n{% endfor %}\n\n): 'int' object is not iterable"

[drybjed]

I'm not sure why the test on Travis-CI fails. I tested this PR in my local development environment and it passes fine, therefore I'll merge it so that the pull request doesn't block the merge of DebOps repositories into one.