buildbot: run SVNPoller with --trust-server-cert

I asked this similar question and got a satisfactory answer. However, doing the same with SVNPoller doesn't work.

So how ca开发者_开发技巧n I pass --trust-server-cert as an extra param to SVNPoller in buildbot

class MyPoller(SVNPoller):
    def __init__(...):
        SVNPoller.__init__(self, ...)

    def getProcessOutput(self, args):
        args += ["--trust-server-cert"]
        return SVNPoller.getProcessOutput(self, args)

Use extra_args if specified, an array of strings that will be passed as extra arguments to the svn binary.