Dependency addition Python3

[Jarli01]

Python2 was removed from at least 20.04 and is replaced with Python3. Manually installing the package and then running the script works.

This change runs the installation process for it.

[Danp2]

Python2 is EOL. Need to switch to using Python3.

[Jarli01]

I'll test with python3 in a bit to see if everything works, I saw that 2 is eol or is being eol'd

[Jarli01]

Python3 doesn't work

Created symlink /etc/systemd/system/multi-user.target.wants/xo-server.service → /lib/systemd/system/xo-server.service.

Installation complete, open a browser to:
192.168.1.103

Default Login:admin@admin.net Password:admin

Don't forget to change your password!
xoce@xoce:~$
xoce@xoce:~$
xoce@xoce:~$  systemctl status xo-server.service
● xo-server.service - XO Server
     Loaded: loaded (/lib/systemd/system/xo-server.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2020-05-09 23:14:32 UTC; 47s ago
   Main PID: 6212 (node)
      Tasks: 32 (limit: 4578)
     Memory: 99.0M
     CGroup: /system.slice/xo-server.service
             ├─6212 /usr/local/bin/node ./bin/xo-server
             ├─6236 /usr/local/bin/node /opt/xen-orchestra/node_modules/jest-worker/build/workers/processChild.js
             ├─6242 /usr/local/bin/node /opt/xen-orchestra/node_modules/jest-worker/build/workers/processChild.js
             └─6249 /usr/local/bin/node /opt/xen-orchestra/node_modules/jest-worker/build/workers/processChild.js

May 09 23:15:13 xoce xo-server[6212]: 2020-05-09T23:15:13.671Z xo:xo-server ERROR unhandled error event {
May 09 23:15:13 xoce xo-server[6212]:   error: Error: Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED 127.0.0.1:6379
May 09 23:15:13 xoce xo-server[6212]:       at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
May 09 23:15:13 xoce xo-server[6212]:     errno: 'ECONNREFUSED',
May 09 23:15:13 xoce xo-server[6212]:     code: 'ECONNREFUSED',
May 09 23:15:13 xoce xo-server[6212]:     syscall: 'connect',
May 09 23:15:13 xoce xo-server[6212]:     address: '127.0.0.1',
May 09 23:15:13 xoce xo-server[6212]:     port: 6379
May 09 23:15:13 xoce xo-server[6212]:   }
May 09 23:15:13 xoce xo-server[6212]: }
xoce@xoce:~$ python3 --version
Python 3.8.2

[Danp2]

@Jarli01 How did you install Python3? What OS?

FWIW, I just tested using the script (changed python2-minimal to python3-minimal beforehand) and it worked fine for me w/ Ubuntu 20.04