Switchover 2.0 * Upgrades interface of cli. Option `--cluster` is removed instead used human friendly notation: mycrud@mycrud_001 * Fixed behaviour of `--discovery-timeout` in all commands. * Extended logs with date, time and colors * Support of `switchover etcd` allows to get information from ETCD and fix some values in it * Support of `switchover connect` allows to run console to specified instance. Ex. `switchover connect mycrud:master` * Added flags to promote instance during Emergency. Such as `--no-check-*`, `--valid-status` and `--no-fence-master`. * `switchover promote` now tries to switch to RO old broken master. Helpfull during network split.