Save and restore original transaction flags in wrapper test() method

...and here lies the key to the mystery of yum needing to repopulate
the transaction after a test-run, doh :)

rpmUtils/transaction.py

@@ -110,12 +110,14 @@ def test(self, cb, conf={}):
  """tests the ts we've setup, takes a callback function and a conf dict 
  for flags and what not"""
 
+ origflags = self.getTsFlags()
  self.addTsFlag(rpm.RPMTRANS_FLAG_TEST)
  # FIXME GARBAGE - remove once this is reimplemented elsehwere
  # KEEPING FOR API COMPLIANCE ONLY
  if conf.get('diskspacecheck') == 0:
  self.ts.setProbFilter(rpm.RPMPROB_FILTER_DISKSPACE)
  tserrors = self.ts.run(cb.callback, '')
+ self.ts.setFlags(origflags)
 
  reserrors = []
  if tserrors: