[Buildbot] #3268: Git retry is inconsistent & has failure modes

[Buildbot trac]

#3268: Git retry is inconsistent & has failure modes
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Reporter:  vlovich    |      Owner:
    Type:  undecided  |     Status:  new
Priority:  major      |  Milestone:  undecided
 Version:  0.8.10     |   Keywords:
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 The git fetch command may fail & ignore the retryFetch/retry parameters
 that the step is configured with.  The bug is that _fetch invokes _dovccmd
 without configuring abandonOnFailure.

 Moreover, it seems like the distinction between retryFetch and retry isn't
 particularly interesting & there should only be a single retry mechanism
 that is bullet-proof - upon any remote action failing a retry should be
 attempted; trying to distinguish clone network failures from fetch network
 failures doesn't seem overly useful.

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Ticket URL: <http://trac.buildbot.net/ticket/3268>
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