Don't base command exit code on wpull's exit code #87
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Currently the crawl management command always returns a zero exit code even if wpull has some kind of serious error. By default wpull returns a non-zero exit code for *any* failure, which is too sensitive - we don't want downstream processing to fail just because the crawler can't resolve the DNS of a link, for example. This change reintroduces the wpull exit status codes but only for errors that don't relate to network failures (DNS, connectivity, etc).
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Currently the crawl management command always returns a zero exit code even if wpull has some kind of serious error. By default wpull returns a non-zero exit code for any failure, which is too sensitive - we don't want downstream processing to fail just because the crawler can't resolve the DNS of a link, for example.
This change reintroduces the wpull exit status codes but only for errors that don't relate to network failures (DNS, connectivity, etc).