Support for centos 7

[chandru9279]

Using package than apt_package resource.

Also build_essentials equivalent for centos : http://stackoverflow.com/a/3523405/626084

[sleongkoan]

@chandru9279 Since the project seems to be abandonned, I've forked the repo and included your change in it: https://supermarket.chef.io/cookbooks/pip_elastalert