The fully fledged AutoConfiguration is not usable with isOnline=True
outside of P1 because it actually tries to access information from IS
servers. Revert back to using AthFile directly as it was done in
runHLT_standalone.py. This uncovered also a bug in that we were using an out-dated
geometry/conditions tags when running on data.
The default is still isOnline=False but added a command line option to
switch the mode for ease of debugging problems we are currently seeing.
Once those are fixed we should set the default to isOnline=True.