For the new renew-crypto operation, we need to run
functions while most of the daemons are stopped,
except for WConfd. This refactors our code a bit
and generalizes the method that runs functions
while *all* daemons are stopped to one that
accepts a list of daemons to not be stopped.
Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>