Polling for multiple git branches of the same repository raise RunTimeError

[Laurent Mignon (Acsone)]

It seems that if we want to make a polling for multiple branches of the same Git repository, we must use the 'branches' parameter on the GitPoller. Multiple instances of GitPoller for a same repository is not supported.

2014-02-24 11:54:30+0100 [-] gitpoller: using workdir '/home/buildbot/buildbot/master/gitpoller/59609759f283abdfac2a15b03bc28726f0f83c7e'
2014-02-24 11:54:30+0100 [-] gitpoller: using workdir '/home/buildbot/buildbot/master/gitpoller/3e9e937176223ffe7c083954da1539179b497e3a'
2014-02-24 11:54:30+0100 [-] during reconfig:
 Traceback (most recent call last):
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1213, in unwindGenerator
     return _inlineCallbacks(None, gen, Deferred())
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1070, in _inlineCallbacks
     result = g.send(result)
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/buildbot/config.py", line 730, in reconfigService
     yield svc.reconfigService(new_config)
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1213, in unwindGenerator
     return _inlineCallbacks(None, gen, Deferred())
 --- <exception caught here> ---
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1070, in _inlineCallbacks
     result = g.send(result)
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/buildbot/changes/manager.py", line 62, in reconfigService
     src.setServiceParent(self)
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/application/service.py", line 186, in setServiceParent
     self.parent.addService(self)
   File "/home/buildbot/buildbot/local/lib/python2.7/site-packages/twisted/application/service.py", line 303, in addService
     " '%s'" % service.name)
 exceptions.RuntimeError: cannot have two services with same name '<email address hidden>:my_project'