Fix bug where error parser what-if output causes resource to be considered converged.

We now fall back to assuming the resource is not converged if we cannot parse
information about a dsc resource.
Don't care how many timess you warn, just do it
Rename Chef::Exceptions::LCMParserException to Chef::Exceptions::LCMParser
Add whitespace
Merge pull request #2654 from opscode/jdm/lcm-parser-fixes

Fix bug where errored parsing from what-if output causes resource to be considered converged