Use https instead of ssh for submodule
Use https instead of ssh for submodule

- So it can be properly cloned in CI

[#135234395]

Signed-off-by: Anna Thornton <0e9b4a17e1cf85a71a11118ecdbc866e5f8ffc65@pivotal.io>

matiasinsaurralde/tyk-buildpack,cloudfoundry/binary-buildpack,rakutentech/binary-buildpack,cloudfoundry/binary-buildpack,matiasinsaurralde/tyk-buildpack,rakutentech/binary-buildpack,matiasinsaurralde/tyk-buildpack,matiasinsaurralde/tyk-buildpack,matiasinsaurralde/tyk-buildpack,matiasinsaurralde/tyk-buildpack,cloudfoundry/binary-buildpack,rakutentech/binary-buildpack,matiasinsaurralde/tyk-buildpack