Set cflinuxfs2/3 as optional inputs
Set cflinuxfs2/3 as optional inputs

- So we can make this separate jobs

[#159530975]

Signed-off-by: Jackson Feeny <c36636f229e2e0887bbecb5e06d5626818aed501@gmail.com>

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci