Add role to deploy repositories, rename of playbooks

deploy_containerlab.yaml

inventory.yml

roles/gap_repos/.travis.yml

roles/gap_repos/README.md

roles/gap_repos/defaults/main.yml

roles/gap_repos/handlers/main.yml

roles/gap_repos/meta/main.yml

roles/gap_repos/tasks/main.yml

roles/gap_repos/tests/inventory

roles/gap_repos/tests/test.yml

roles/gap_repos/vars/main.yml