scripts: update go version to 1.11.1
scripts: update go version to 1.11.1

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

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