added test for creator that uses fake SL client with test fixtures
added test for creator that uses fake SL client with test fixtures

mattcui/bosh-softlayer-cpi-release,jianqiu/bosh-softlayer-cpi,mattcui/bosh-softlayer-cpi-release,mattcui/bosh-softlayer-cpi-release,mattcui/bosh-softlayer-cpi,vvraskin/bosh-softlayer-cpi,karafelix/bosh-softlayer-cpi,karafelix/bosh-softlayer-cpi,jianqiu/bosh-softlayer-cpi,vvraskin/bosh-softlayer-cpi,maximilien/bosh-softlayer-cpi,mattcui/bosh-softlayer-cpi,mattcui/bosh-softlayer-cpi,mattcui/bosh-softlayer-cpi-release,maximilien/bosh-softlayer-cpi,vvraskin/bosh-softlayer-cpi,mattcui/bosh-softlayer-cpi,vvraskin/bosh-softlayer-cpi