[Varnish] #1683: varnishncsa should log the last value in vcl sub

[Varnish]

#1683: varnishncsa should log the last value in vcl sub
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 Reporter:  razvanphp  |       Owner:  aondio
     Type:  defect     |      Status:  new
 Priority:  normal     |   Milestone:
Component:  build      |     Version:  4.0.3
 Severity:  normal     |  Resolution:
 Keywords:             |
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Comment (by razvanphp):

 I just want to mention, that there is another case where the original
 value is better in the logs, for example I modify the `req.url` few times
 for normalization, but in the log I think `%r` and `%U%q` should still
 contain the original URL. Is this case affected by the proposed patch?

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1683#comment:6>
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