This PR improves exception handling of the `pywbem` module, which uses different exception calls before and starting with pywbem 1.0.0.
This allows correct exception handling with older `pywbem` versions (< 1.0.0) and newer versions.
The PR also adds exception handling for HTTP exception, when a HTTP server responds on the requested host and port, but it's not an ESXi CIM server.
* Add parameter (-S) for custom SSL/TLS protocol version
* Add parameter (-S) for custom SSL/TLS protocol version
* Add parameter (-S) for custom SSL/TLS protocol version
Removed unused sensor_value variable and string import.
Removed no SSL tryout on pywbem v 0.0.7 (default version doesn't have no_verification).
Added global hosturl variable declaration after imports.
Added "Front Panel Board 1 FP LCD Cable 0: Connected" to ignore list (LENOVO System x3550 M5).
Replace sys.exit by os._exit to be sure that the script stops on timeout immediately and does not produce false-positive results (usually it comes to WARNING).
Set status to unknown instead of critical for timeouts, authentication errors and such things as those issues are critical for the check itself but not for the service.
Andreas Gottwald sent a patch which fixes an issue, when the CIM element was a "NoneType" element but the plugin wanted to read a string from it.
Traceback (most recent call last):
File "./check_esxi_hardware.py", line 629, in <module>
verboseoutput(" Element Name = "+elementName)
TypeError: cannot concatenate 'str' and 'NoneType' objects
The change for the chassis serial number was already prepared a few months ago but I only found time today to do the merge and the release. Therefore adapting the date in history and version variable to today (20150109)
