Fedora Atomic initial support

[Heus-Sueh]

for now I've only added support for installing zerotier using the fedora atomic package manager which is rpm-ostree, I don't know if these changes alone are the solution, I still need to test

[goshansp]

Great work - LGTM. With FCOS40 it fails upon zerotier-cli join with zerotier-cli: missing port and zerotier-one.port not found in /var/lib/zerotier-one and this can be fixed with systemctl start zerotier-one. Requiring a manual start of the service is compliant with the rpm standard. I see the client in the management console and have not tested connectivity. Thank you for this valuable contribution!

[Heus-Sueh]

Great work - LGTM. With FCOS40 it fails upon zerotier-cli join with zerotier-cli: missing port and zerotier-one.port not found in /var/lib/zerotier-one and this can be fixed with systemctl start zerotier-one. Requiring a manual start of the service is compliant with the rpm standard. I see the client in the management console and have not tested connectivity. Thank you for this valuable contribution!

Thanks for the feedback, I was wondering how I could start the script again after restarting to start the zerotier services in systemd, but it's better to install the package and tell the user to give the command systemctl start zerotier-one after the system restart

One thing I ended up finding is that zerotier is already in the rpmfusion-nonfree repository, I don't know why this isn't mentioned on the official website
https://github.com/rpmfusion/zerotier-one/tree/f40