Update __init__.py (#394)
Update __init__.py (#394)

only get `install_k3s_channel` & `install_k3s_version` from the incoming KCLI plan file. As workers do not support the `--flannelk_backend` parameter - that will be set if the condtional on `sdn` evalulates to **true**

I think this update should do it.
karmab/kcli,karmab/kcli,karmab/kcli,karmab/kcli