Add a missing node role
Add a missing node role

Apart from being a master, a candidate, offline or drained, a node can
have one more state: none of those. Adding back the normal, nice,
healthy "just" a node! :)

Signed-off-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

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