I didn't love the way safe_while was encouraged to be used and it didn't
fit right with the new no-raising behavior. Now it's encouraged to be
used like this:
with safe_while() as proceed:
while proceed():
do_things()
Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
This lets them nicely have independent error handling;
an example case where that is desirable is that the
old code failed to archive the logs if one of the daemons
exited with an error.
This also means a config file might specify just some
of the smaller tasks, e.g. for a test that explicitly
wants to create operational error situations.
The diff looks big because of an indentation change,
use "git diff -b" for a smaller diff.
