Update gitlab-ssl

IP was not forwarded correctly with the old configuration on my setup, this is working for me.
Merge pull request #201 from skarllot/master

Fixed SELinux modifications for Apache
Merge pull request #194 from patschi/patch-1

Update gitlab-ssl
Importing is important and should be a toplevel thing.
Merge pull request #202 from gitlabhq/import-top-level

Importing is important and should be a toplevel thing.
Remove installer for 4.0 since it is a security risk and do nothave empty directories since it is not clear which OS's have documentation.
Merge pull request #203 from gitlabhq/deprecate-old-and-duplicate-content

Remove installer for 4.0 since it is a security risk
change in gitlab-shell/config.yml

Because later in this recipe it is suggested to set port 80 to 443 (ssl) redirection I recommend to advice user to set https in config.yml file. It takes me some time to find this as problem when accessing gitlab api (https://github.com/gitlabhq/gitlabhq/issues/3483)
Merge pull request #204 from rexcze/patch-1

change in gitlab-shell/config.yml
Update README.md
Merge pull request #207 from codr/patch-2

Update README.md