bump cpi-core.light stemcell support
bump cpi-core.light stemcell support

Orange-OpenSource/bosh-cloudstack-cpi-release,cloudfoundry-community/bosh-cloudstack-cpi-release,Orange-OpenSource/bosh-cloudstack-cpi-release,cloudfoundry-community/bosh-cloudstack-cpi-release,Orange-OpenSource/bosh-cloudstack-cpi-release,cloudfoundry-community/bosh-cloudstack-cpi-release