recoverd: when the recmaster is banned, use that information when forcing an election

recoverd: when the recmaster is banned, use that information when forcing an election

When we trigger an election because the recmaster considers itself inactive,
update our local nodemap with the recmaster's flags before calling
force_election(). This way, we don't send the inactive node freeze commands
(e.g.) that may fail and then lead to ourselves getting banned.

The theory is that this should help avoiding banning loops.

Signed-off-by: Michael Adam <obnox@samba.org>
(cherry picked from commit 932360992b08a5483d90c0590218ba0fd756119e)