Fix NodeRAIDDegraded to not use a string rule expressions
{
alert: 'NodeRAIDDegraded',
expr: |||
- 'node_md_disks_required - ignoring (state) (node_md_disks{state="active"}) > 0'
+ node_md_disks_required - ignoring (state) (node_md_disks{state="active"}) > 0
||| % $._config,
'for': '15m',
labels: {
