handle https for gitlab
Install latest nginx version from upstream repo

if provided `:version` doesn't match distro repo version
add PHP opcache module recipe
Merge pull request #199 from phunehehe/upstream-nginx

Install latest nginx version from upstream repo if provided `:version` doesn't match distro provided version
Merge pull request #198 from phunehehe/zend-opcache

Add zend-opcache module recipe
Merge pull request #201 from phunehehe/gitlab

handle https for gitlab
add utility scripts
let admins be sudoers
Merge pull request #200 from phunehehe/scripts

add utility scripts
upgrade nginx instead of installing
Merge pull request #202 from phunehehe/nginx

upgrade nginx instead of installing
declare repo version
Merge pull request #203 from phunehehe/nginx

declare repo version + `raise NotImplemented` for unsupported platforms
better defaults, create missing directory
dkim for centos
centos uses opendkim user which is arguably better
Merge pull request #206 from phunehehe/dkim

dkim for centos
Merge pull request #205 from phunehehe/icinga

better defaults, create missing directory