Updated package to monitor our openSUSE infrastructure.

- Build require icinga2-bin and icinga2-common to get rid of owning
directories that belong to icinga2

- Update to 1.1:
+ Add new option -i or --ignore-backends to exclude certain backend(s)
from the check. The parameter expects a single string for the backend
name or a list of comma-separated backend names
+ Fix and display the maximum number of allowed concurrent sessions
of the backend in performance data (was always showing 0 before)
+ Added bytes_in and bytes_out to performance data per backend
- switch to https://github.com/Napsty/check_haproxy as upstream
URL: contains latest 1.1 relase plus additional icinga2 config
- package NRPE snipplet
- package icinga2 CheckCommand definition template
- use _service for sources
- ran spec-cleaner