website: add documentation for packer_http_addr extra variable
website: add documentation for packer_http_addr extra variable

bryson/packer,dave2/packer,mitchellh/packer,bryson/packer,timsutton/packer,tb3088/packer,paulmey/packer,pecigonzalo/packer,tb3088/packer,rnaveiras/packer,tb3088/packer,pecigonzalo/packer,bryson/packer,mitchellh/packer,mkuzmin/packer,grubernaut/packer,tas50/packer,ricardclau/packer,tas50/packer,grubernaut/packer,pecigonzalo/packer,paulmey/packer,ricardclau/packer,mkuzmin/packer,pecigonzalo/packer,dave2/packer,rnaveiras/packer,bryson/packer,hashicorp/packer,mkuzmin/packer,mkuzmin/packer,rnaveiras/packer,rnaveiras/packer,timsutton/packer,mkuzmin/packer,timsutton/packer,dave2/packer,dave2/packer,tas50/packer,grubernaut/packer,tas50/packer,rnaveiras/packer,paulmey/packer,youhong316/packer,tb3088/packer,ricardclau/packer,mitchellh/packer,tb3088/packer,rnaveiras/packer,dave2/packer,paulmey/packer,ricardclau/packer,dave2/packer,mkuzmin/packer,youhong316/packer,timsutton/packer,timsutton/packer,bryson/packer,bryson/packer,grubernaut/packer,youhong316/packer,tas50/packer,ricardclau/packer,grubernaut/packer,ricardclau/packer,youhong316/packer,grubernaut/packer,mitchellh/packer,timsutton/packer,hashicorp/packer,youhong316/packer,tas50/packer,paulmey/packer,tb3088/packer,paulmey/packer,hashicorp/packer,mitchellh/packer,hashicorp/packer,youhong316/packer