When destination sysctl file is missing, it is created.
But, for idempotency purposes, the creation process now takes place just before it is used, in the
main code path so an empty file is not left over if the code
module.fail_jsons before the file is really used.
When syscl file was missing, sysctl module was complaining about it and
bailing out.
This behaviour prevents usage of /etc/sysctl.d directory, present in
some distributions.
This patch accepts a missing sysctl.conf file so sysctl.d directory can
be used.
However, it will bail out if the destination directory doesn't exist.
Now handle positive integer value in virtual files if they are separated
by group of space characters where the count is unpredictable.
Thanks to romeotheriault for filing this bug.