GitLab

tests fails on armv7 so disable

* Add static subpackage.

fails with:
../go/src/github.com/cloudfoundry/cli/cf/i18n/i18n.go:9:2: cannot find package "github.com/cloudfoundry/cli/cf/resources" in any of:
	/home/buildozer/aports/testing/cloudfoundry-cli/src/go/src/github.com/cloudfoundry/cli/vendor/github.com/cloudfoundry/cli/cf/resources (vendor tree)
	/usr/lib/go/src/github.com/cloudfoundry/cli/cf/resources (from $GOROOT)
	/home/buildozer/aports/testing/cloudfoundry-cli/src/go/src/github.com/cloudfoundry/cli/cf/resources (from $GOPATH)

add install_if for virtualbox-guest-additions