[PVE-User] Changing votes and quorum

[Dewangga Alam]

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Hello!

I was new in proxmox and am trying to build large scale proxmox 5.2
cluster (>128 nodes). My `/etc/pve/corosync.conf` configuration like :

```
nodelist {
  node {
    name: node1
    nodeid: 1
    quorum_votes: 1
    ring0_addr: 192.168.24.2
  }
  ... skip till nodes 28 ...
  node {
    name: node28
    nodeid: 28
    quorum_votes: 1
    ring0_addr: 192.168.24.110
  }
}
quorum {
  provider: corosync_votequorum
  expected_votes: 16
  last_man_standing: 1
  last_man_standing_window: 20000
}
totem {
  cluster_name: px-cluster1
  config_version: 90
  window_size: 300
  interface {
    ringnumber: 0
  }
  ip_version: ipv4
  secauth: on
  transport: udpu
  version: 2
}
```

My cluster have 28 nodes in each rack. and total nodes will 28 nodes*5
racks. So it will 140 nodes in a cluster. From the adjustment above, I
wonder there's affected to pve/corosync.conf configuration, but in
fact, it didn't.

So my basic question, when I invoke `pvecm status` in a node, the
result wasn't as I expect. Then, is it possible to change votequorum
configuration?


```
Quorum information
- ------------------
Date:             Sun Oct 28 20:51:42 2018
Quorum provider:  corosync_votequorum
Nodes:            28
Node ID:          0x00000002
Ring ID:          1/27668
Quorate:          Yes

Votequorum information
- ----------------------
Expected votes:   28
Highest expected: 28
Total votes:      28
Quorum:           15
Flags:            Quorate LastManStanding
```
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