force kill under more situations
force kill under more situations

when running either with an interval or forked we need to kill

- this is particularly important for old chef-clients

when running under windows we also need to kill instead of exec

- windows responds to Process.exec but that won't work.

Signed-off-by: Lamont Granquist <0ab8dc438f73addc98d9ad5925ec8f2b97991703@scriptkiddie.org>

chef-cookbooks/chef_client_updater,chef-cookbooks/chef_client_updater