Fix wpscan again!

[domwhewell-sage]

I have added the ruby development environment to the wpscan module and gcc,make as they are required to build the gem curl is also required in order to run the gem Should fix #1441

[TheTechromancer]

Okay, we have a bit of an awkward situation.

• Debian: needs gcc, make, and ruby-rubygems, curl, and ruby-dev
• Ubuntu: needs gcc, make, and ruby-rubygems, curl, and ruby-dev
• Arch: needs gcc, make, rubygems, and curl (there is no ruby-dev package)
• Fedora: needs gcc, make, rubygems, curl, and ruby-devel

Basically, the ruby dev package is missing from Arch, and named differently on redhat. So we should handle cases for ansible_facts['os_family'] == 'Archlinux' and ansible_facts['os_family'] == 'RedHat'.

Sorry to keep adding to this one; it's turned out to be really annoying.

[domwhewell-sage]

No worries I expected it to be a simple pre-compiled binary to start with. I think those ansible tasks should handle those cases.