Remove weekly bosserver restarts

Remove weekly bosserver restarts

Change the default so new installations of the bosserver have
no weekly restarts. Update the manpage and XML documentation to
reflect this change.

FIXES 126138

Change-Id: Ic22b750a602f6d2a22be881f5e1b04cd4fa132ae
Reviewed-on: http://gerrit.openafs.org/1097
Reviewed-by: Russ Allbery <rra@stanford.edu>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>