Fixes for HEP-Puppet/nagios/#6
- Updated path for nrpe.cfg template and added test
- Disabled check_puppet_checkin_db as it needs an overhaul
- Replaced old definition of check_hardware_spec with new templated one
- Changed the kernel plugin:
   - fixed list of tempalted plugins
   - merged templates for Debian and Redhat systems into one
fixed missing bracket
Fixed nrpe.cfg file definition
Merge pull request #7 from kreczko/development

Fixes for HEP-Puppet/nagios/#6