add specs for add_catalog_item coverage 100%
add specs for add_catalog_item coverage 100%

Change-Id: I8fc23b5f333b891c66ff80ccffefb2b37ca690ee

wcamarao/bosh-vcloud-cpi-release,wcamarao/bosh-vcloud-cpi-release,cloudfoundry-incubator/bosh-vcloud-cpi-release,cloudfoundry-incubator/bosh-vcloud-cpi-release,wcamarao/bosh-vcloud-cpi-release,cloudfoundry-incubator/bosh-vcloud-cpi-release