communicator/ssh: expand user path for private key
communicator/ssh: expand user path for private key

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

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