Clarify job processing order in admin guide
Clarify job processing order in admin guide

The fact that jobs don't necessarily execute in order has been source
for some confusion. Hopefully this update will clarify things.

Signed-off-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

leshchevds/ganeti,andir/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/snf-ganeti,yiannist/ganeti,mbakke/ganeti,leshchevds/ganeti,yiannist/ganeti,mbakke/ganeti,onponomarev/ganeti,onponomarev/ganeti,apyrgio/ganeti,bitemyapp/ganeti,grnet/snf-ganeti,andir/ganeti,ganeti/ganeti,andir/ganeti,ganeti/ganeti,ganeti-github-testing/ganeti-test-1,bitemyapp/ganeti,dimara/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,grnet/snf-ganeti,leshchevds/ganeti,yiannist/ganeti,dimara/ganeti,apyrgio/ganeti,ganeti/ganeti