fixes issue where netcli would cause exception with an invalid conditional
fixes issue where netcli would cause exception with an invalid conditional

The Conditional instance will cause a stack trace if the provided conditional
does not map properly to the response.  This fixes that issue so that the
Conditional instance will now raise a FailedConditionalError with the
conditional that caused the failure.

Modules *_command modules (and any other modules that create an instance
of Conditional) should be updated to catch the FailedConditionalError
exception.

thaim/ansible,thaim/ansible