:filtered_api = true is failing due to funny rbovirt behaviour

[aalba6675]

Heads up:
1, Admin user (should work with no filtered_api, filtered_api = nil true or false
2. But with :filtered_api = true vagrant up is failing at
abenari/rbovirt#110
3. In rbovirt if I comment out the test for unfiltered_api (template_api.rb) vagrant up works, and the VM gets permissions assigned to the user (this is the "correct" behaviour for filtered_api and emulates ovirt-shell)

def templates(opts={})
      path = "/templates"
      ##path += search_url(opts) unless filtered_api
      path += search_url(opts)
      http_get(path).xpath('/templates/template').collect do |t|
        OVIRT::Template::new(self, t)
      end.compact
    end

[aalba6675]

See abenari/rbovirt#110. Identified the cause of the nil exception: with the filtered_api search, a Blank template of id "00000000-0000-0000-0000-000000000000" is returned with no <cluster> element causing XML parsing to fail.

[myoung34]

Nice catch. Remind me here what the upstream changes affect and I'll try to make sure we get that version as a dependency

[aalba6675]

I proposed to upstream to test for nil'ness of (xml/cluster).first

abenari/rbovirt#111