Merge branch 'master' into develop
Removed size as performance data in lib/python2/nagios_plugins/check_megaraid_ld.py
Added bin/check-lsi-megaraid-hsbin/check-lsi-megaraid-hs and lib/python2/nagios_plugins/check_megaraid_hs.py
Added properties critical_number and warning_number to CheckMegaRaidHotsparePlugin in lib/python2/nagios_plugins/check_megaraid_hs.py
Added and evaluated commandline options --warning and --critical to CheckMegaRaidHotsparePlugin in lib/python2/nagios_plugins/check_megaraid_hs.py
Retrieved and evaluated the number of hotspare drives in lib/python2/nagios_plugins/check_megaraid_hs.py
Added performance data to lib/python2/nagios_plugins/check_megaraid_hs.py
Cosmetics
Added bin/check-ppd-instance and lib/python2/nagios_plugins/check_ppd_instance.py
Added job_id as property to CheckPpdInstancePlugin in lib/nagios_plugins/check_ppd_instance.py
Added exception classes SocketTransportError and NoListeningError to lib/nagios_plugins/check_ppd_instance.py
Added property timeout to class CheckPpdInstancePlugin in lib/python2/nagios_plugins/check_ppd_instance.py, started with method send() of CheckPpdInstancePlugin.
Added properties polling_interval, buffer_size and should_shutdown to class CheckPpdInstancePlugin in lib/python2/nagios_plugins/check_ppd_instance.py, finished method send() of CheckPpdInstancePlugin.
Added command line parameter to set the buffer size.
Added property cancel_signal and method exit_signal_handler()to class CheckPpdInstancePlugin in lib/python2/nagios_plugins/check_ppd_instance.py.
Integrated method send() in calling the plugin in lib/python2/nagios_plugins/check_ppd_instance.py
Added classes RequestStatusError and RequestStatus and method parse_result() to class CheckPpdInstancePlugin in  lib/python2/nagios_plugins/check_ppd_instance.py
Minimal changes
Added timeout check on connecting to PPD in lib/python2/nagios_plugins/check_ppd_instance.py
Added version check to lib/python2/nagios_plugins/check_ppd_instance.py