add 2019 support (#7)

* add 2019 support

* test minimal

add fail2ban support (#6)

* add fail2ban support

* typo

switch to gdr (#5)

properly activate travis (#4)

* properly activate travis

* fix test

* implement el-cheapo setup check

* sudo

* remove changed_when

* re-add changed_when

* micro optimisations

* fix readme

changed repository url #1 (#2)

make ufw configuration optional

fix ufw task

fix readme