Pack python-ipaddress to rpm

[strizhechenko]

#84 https://github.com/phihag/ipaddress/issues/32

yum -y install ruby-devel gcc make rpm-build rubygems python-pip
gem install --no-ri --no-rdoc fpm
fpm -s python -t rpm ipaddress

• [x] fpm locally installed
• [x] rpm output
• [x] some hosting like a packagecloud
• [x] travis pipeline
• [ ] epel