[Buildbot] #3006: re-instore a `http.log`

[Buildbot trac]

#3006: re-instore a `http.log`
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Reporter:  Ben        |      Owner:
    Type:  undecided  |     Status:  new
Priority:  major      |  Milestone:  0.9.0
 Version:  master     |   Keywords:  web, logs
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 The amount of web request is by far higher that in eight as each page
 visit generates a dozen of sub-requests.

 Hence, the need for a http.log is even bigger than in eight.

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Ticket URL: <http://trac.buildbot.net/ticket/3006>
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Buildbot: build/test automation