Switch the ejabberd LDAP setup to a new application account

Needs the new directory structure:

```
dn: cn=applications,dc=kosmos,dc=org
objectClass: top
objectClass: organizationalRole
cn: users

dn: ou=kosmos.org,cn=applications,dc=kosmos,dc=org
objectClass: top
objectClass: organizationalUnit
ou: kosmos.org

dn: ou=5apps.com,cn=applications,dc=kosmos,dc=org
objectClass: top
objectClass: organizationalUnit
description: 5apps
ou: 5apps.com

dn: uid=wiki,ou=kosmos.org,cn=applications,dc=kosmos,dc=org
objectClass: simpleSecurityObject
objectClass: account
uid: wiki
userPassword: [snip]

dn: uid=xmpp,ou=kosmos.org,cn=applications,dc=kosmos,dc=org
objectClass: simpleSecurityObject
objectClass: account
uid: xmpp
userPassword: [snip]

dn: uid=xmpp,ou=5apps.com,cn=applications,dc=kosmos,dc=org
objectClass: simpleSecurityObject
objectClass: account
uid: xmpp
userPassword: [snip]

```

And the new ACIs:

```
dn: ou=5apps.com,cn=users,dc=kosmos,dc=org
changetype: modify
replace: aci
aci: (target="ldap:///cn=*,ou=5apps.com,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword || nsRole") (version 3.0; acl "xmpp-5apps-read-search"; allow (read,search) userdn="ldap:///cn=xmpp,ou=5apps.com,cn=users,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=5apps.com,cn=users,dc=kosmos,dc=org")(targetattr="userPassword") (version 3.0; acl "xmpp-5apps-change-password"; allow (write) userdn="ldap:///cn=xmpp,ou=5apps.com,cn=users,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=5apps.com,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword || nsRole || objectClass") (version 3.0; acl "xmpp-5apps-read-search"; allow (read,search) userdn="ldap:///uid=xmpp,ou=5apps.com,cn=applications,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=5apps.com,cn=users,dc=kosmos,dc=org")(targetattr="userPassword") (version 3.0; acl "xmpp-5apps-change-password"; allow (write) userdn="ldap:///uid=xmpp,ou=5apps.com,cn=applications,dc=kosmos,dc=org";)

dn: ou=kosmos.org,cn=users,dc=kosmos,dc=org
changetype: modify
replace: aci
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword || nsRole") (version 3.0; acl "xmpp-kosmos-read-search"; allow (read,search) userdn="ldap:///cn=xmpp,ou=kosmos.org,cn=users,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword") (version 3.0; acl "xmpp-kosmos-read-search"; allow (read,search) userdn="ldap:///cn=wiki,ou=kosmos.org,cn=users,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="userPassword") (version 3.0; acl "xmpp-kosmos-change-password"; allow (write) userdn="ldap:///cn=xmpp,ou=kosmos.org,cn=users,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword || nsRole || objectClass") (version 3.0; acl "xmpp-kosmos-read-search"; allow (read,search) userdn="ldap:///uid=xmpp,ou=kosmos.org,cn=applications,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="cn || sn || uid || mail || userPassword || objectClass") (version 3.0; acl "xmpp-kosmos-read-search"; allow (read,search) userdn="ldap:///uid=wiki,ou=kosmos.org,cn=applications,dc=kosmos,dc=org";)
aci: (target="ldap:///cn=*,ou=kosmos.org,cn=users,dc=kosmos,dc=org")(targetattr="userPassword") (version 3.0; acl "xmpp-kosmos-change-password"; allow (write) userdn="ldap:///uid=xmpp,ou=kosmos.org,cn=applications,dc=kosmos,dc=org";)
```

Refs #140

site-cookbooks/kosmos-ejabberd/templates/vhost.yml.erb

@@ -14,12 +14,12 @@ host_config:
   <% if @host[:ldap_enabled] -%>
     auth_method: ldap
     ldap_servers: ["<%= @ldap_server %>"]
-    ldap_rootdn: "cn=xmpp,ou=<%= @host[:name] %>,<%= @ldap_base %>"
+    ldap_rootdn: "<%= @ldap_rootdn %>"
     ldap_password: "<%= @host[:ldap_password] %>"
     ldap_encrypt: <%= @ldap_encryption_type %>
     ldap_tls_verify: hard # when TLS is enabled, don't proceed if a cert is invalid
     ldap_base: "ou=<%= @host[:name] %>,<%= @ldap_base %>"
-    ldap_filter: "(nsRole=cn=xmpp_role,ou=<%= @host[:name] %>,<%= @ldap_base %>)"
+    ldap_filter: "(objectClass=person)"
   <% end -%>
 
 append_host_config: