WIP: VHG-022 Add SSL support

[cytopia]

SSL support for vhost-gen

This PR will introduce configurable SSL support for vhost-gen.

Options

The following values can be changed via the configuration file

Yaml key	Default value
protocols	TLSv1 TLSv1.1 TLSv1.2
honor_cipher_order	on
ciphers	HIGH:!aNULL:!MD5

Modes

The following modes can be enabled via command line arguments

Config	Desc
plain	only serve http
ssl	only serve https
both	serve http and https
redir	redirect all http to https and serve https

Dependent projects

Once this has been stabilized, it will need to be backported into the following Docker projects:

• https://github.com/devilbox/docker-nginx-stable
• https://github.com/devilbox/docker-nginx-mainline
• https://github.com/devilbox/docker-apache-2.2
• https://github.com/devilbox/docker-apache-2.4

Upstream integration

Once the dependent Docker projects are capable of using this feature, it will finally go into the Devilbox:

• https://github.com/cytopia/devilbox