[SECURITY] Fedora 28 Update: python2-2.7.15-4.fc28

Python 2 is an old version of the language that is incompatible with the 3.x line of releases. The language is mostly the same, but many details, especi ally how built-in objects like dictionaries and strings work, have changed considerably, and a lot of deprecated features have finally been removed in the 3.x line. Note that documentation for Python 2 is provided in the python2-docs package. This package provides the “python2” executable; most of the actual implementation is within the “python2-libs” package.