LUSetNodeParams: autopromote self when needed
LUSetNodeParams: autopromote self when needed

If we're de-offlining or de-draining a node we need to promote it to MC
if we have not enough, or the config will be corrupt.

Signed-off-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>
Reviewed-by: Olivier Tharan <0947fcc917eb1d3c89ad818beb61e3b2c3cf3bba@google.com>

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