remove ensure_resource
remove ensure_resource

it does not work with puppet 2.6.x.

openstack/puppet-vswitch,rdo-puppet-modules/puppet-vswitch,gwdg/puppet-vswitch,squarit/puppet-vswitch,openstack/puppet-vswitch,aquto/puppet-vswitch,oeudtinsanmie/puppet-vswitch,plumgrid/puppet-vswitch,pcfens/puppet-vswitch,redhat-cip/puppet-vswitch