Changed to use veos_hosts and junos_hosts in example scripts

Section1/show_version/README.md

Section1/show_version/hosts

Section1/show_version/show_all_responses.yaml

Section1/show_version/show_version.yaml

Section1/show_version/show_version_all.yaml

Section1/show_version/show_version_and_uptime.yaml

Section1/show_version/show_version_arista.output

Section1/show_version/show_version_arista.yaml

Section1/show_version/show_version_juniper.yaml