Reason: if left ConfigWriter, nodes don't know to which cluster they belong.
This will bite us later when we'll revisit node join operation.

Cons: we lose the cluster name from the config file, which means a
standalone "cluster.data" is a little bit harder to analyze. But I have
a plan for this which will follow shortly.

Implementing this will also allow us to cleanly fix "gnt-cluster
getmaster".

Reviewed-by: imsnah

- Implement “gnt-instance reinstall”
- Fix two typos

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

and all users have been converted, let's remove it from the slots of the
cluster object.

Also let's move the tcpudp_port_pool to the cluster object.

Reviewed-by: imsnah

Reviewed-by: iustinp

handling, as it can be static and outside of ganeti.

This also means we can get rid of a lot of infrastructure too:
  - the master/node config files checkers
  - one rpc function

- Split up info tests and add more of them
- Replace map() by [x for x in y]

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: imsnah

- Create all --output options using a constant
- Put node checking code from opcodes into a single function
- Do the same for output fields

Reviewed-by: iustinp

  - move the master node name from the ConfigWriter to SimpleStore (all
    nodes need this, and it was the only thing pulled in from the
    ConfigWriter on nodes)
  - fix mcpu.py and the testing w.r.t. this change; for testing, rename
    the fake_config.py to mocks.py and add a FakeSStore object
  - then add a ganeti-master script which can be run on any node at boot
    and which will not do anything if not master on start (on stop it
    will still try to remove the ip address)
  - also add a new cluster-wide variable (master_netdev) that determines
    on which interface we add this ip address; it's customizable at
    cluster init time
  - also remove the cluster name file which was separately handled from
    ssconf (not needed anymore)
  - remove the master init.d links from the list of config files as this
    is not our responsibility now

logival volumes. This lets you use more than one when none of them can support
your full drive size.

Reviewed-By: iustinp

Reviewed-By: imsnah

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

- Fix typo

Reviewed-By: iustinp

Reviewed-By: iustinp

Reviewed-by: iustinp

Also improve the burnin by doing an optional replace-disks.

Reviewed-by: iustinp

Reviewed-by: iustinp