communicator/ssh: make ssh keys payload internal
communicator/ssh: make ssh keys payload internal

Signed-off-by: Mikhail Ushanov <fe20195d6f83db5d12ef2e74a2f12ae1d8864a05@gmail.com>

ricardclau/packer,ricardclau/packer,ricardclau/packer,mitchellh/packer,youhong316/packer,tas50/packer,youhong316/packer,grubernaut/packer,hashicorp/packer,timsutton/packer,mkuzmin/packer,paulmey/packer,ricardclau/packer,rnaveiras/packer,mitchellh/packer,grubernaut/packer,tas50/packer,dave2/packer,paulmey/packer,dave2/packer,pecigonzalo/packer,bryson/packer,dave2/packer,rnaveiras/packer,rnaveiras/packer,dave2/packer,timsutton/packer,grubernaut/packer,dave2/packer,mkuzmin/packer,pecigonzalo/packer,timsutton/packer,grubernaut/packer,tas50/packer,ricardclau/packer,mitchellh/packer,mkuzmin/packer,rnaveiras/packer,youhong316/packer,paulmey/packer,tas50/packer,pecigonzalo/packer,mitchellh/packer,mkuzmin/packer,paulmey/packer,paulmey/packer,bryson/packer,grubernaut/packer,pecigonzalo/packer,tas50/packer,youhong316/packer,timsutton/packer,rnaveiras/packer,hashicorp/packer,bryson/packer,tas50/packer,dave2/packer,paulmey/packer,timsutton/packer,youhong316/packer,rnaveiras/packer,bryson/packer,timsutton/packer,bryson/packer,mkuzmin/packer,bryson/packer,hashicorp/packer,youhong316/packer,hashicorp/packer,mkuzmin/packer,ricardclau/packer,mitchellh/packer,grubernaut/packer