When multiple files are provided on the command line, continue past any files that cannot be parsed properly

[taladar]

Would be useful to check the files puppet-lint can parse, especially in the presence of new, not yet supported language constructs (like the Pattern type mentioned in the other ticket I created a few minutes ago).

[rnelson0]

When puppet-lint returns a syntax error, that means it cannot parse the file. It would be unwise at that point to attempt linting, as the parser may not have interpreted the file correctly. See #585 for some effort to simply skip over blocks that may cause syntax errors.

[taladar]

I did not mean ignoring the syntax error, I meant ignoring the error for exit code purposes if multiple files are given on the command line.

[rnelson0]

so puppet-lint syntaxerror.pp valid.pp will process valid.pp even though the first one fails? That's something we can look at in 3.0.0 with #586, where the syntax error isn't sometimes causing a crash.