Apt proxy

[tauhid621]

Background

This PR adds proxy details to the /etc/apt/apt.conf file so that apt can work with proxies.

If not provided, apt-get --assume-yes update step fails with error Unsupported proxy configured: ip://3128

How has this been tested?

Updated the module and deployed in azure with proxy. TFE was installed after this

Did you add a new setting?

No

[kkavish]

@tauhid621 if I understand correctly, this is so that apt-get could work for VMs/containers deployed behind a proxy and thus don't have direct access to internet?

[tauhid621]

@kkavish Yes. apt-get for some reason is not working with the default proxy settings. One way to fix it is to use /etc/apt/apt.conf with proxy information

[kkavish]

LGTM!

[hamzahashicorp]

LGTM, but where is this final being templated? Is the proxy_ip being set anywhere, maybe in a tfvars file? I'm not seeing a default value being set other than the ones in the tpl files

[tauhid621]

@hamzahashicorp The files are being templated in the main.tf file of the module.
The default values of proxy ip and port are null.