Add support for installing openssl on RedHat systems

This support means the role will run through correctly on RedHat based systems.
I'm adding support for RedHat to several of my roles and this is the first
problem I've encountered which couldn't be skipped over.
Merge branch 'Support-RedHat-Family-Systems' of https://github.com/goetzk/ansible-openssl into develop
added redhat
Merge branch 'release/1.2.0'