feat: dns challenge

README.md

defaults/main.yml

tasks/CentOS-packages-webserver.yml

tasks/CentOS-timer-webserver.yml

tasks/Debian-packages-webserver.yml

tasks/Debian-timer-webserver.yml

tasks/Fedora-packages-webserver.yml

tasks/Fedora-timer-webserver.yml

tasks/Ubuntu-packages-webserver.yml

tasks/Ubuntu-timer-webserver.yml

tasks/dns-challenge.yml

tasks/main.yml

tasks/webserver.yml

templates/dns-challenge.env.j2

templates/dns-challenge.service.j2

templates/dns-challenge.timer.j2

vars/main.yml