feat(disk): add Lustre filesystem support for Azure Managed Lustre and AWS FSx (#1189)

Add support for Lustre filesystem type in DefaultNFSFsTypeFunc(),
enabling
gpud to properly monitor Lustre mounts (Azure Managed Lustre, AWS FSx
for
Lustre) as shared storage volumes.

Previously, when customers configured Lustre paths as NFS volumes, the
NFS
component would fail validation because Lustre's fstype is "lustre", not
"nfs*". This caused nodes to be marked degraded even though the storage
was accessible. As a workaround, customers mounted Lustre as node-local
volumes, but this bypassed health monitoring entirely - when mounts
failed,
nodes weren't marked degraded and jobs were scheduled on broken nodes.

This change:
- Adds "lustre" to DefaultNFSFsTypeFunc() alongside wekafs, virtiofs,
nfs*
- Adds comprehensive test coverage for Lustre mount detection
- Includes real-world lsblk JSON test data from Azure customer
environment

Signed-off-by: Gyuho Lee <gyuhol@nvidia.com>

Signed-off-by: Gyuho Lee <gyuhol@nvidia.com>

Author: gyuho

.golangci.yml

@@ -23,6 +23,9 @@ linters:
       # Default is to use a neutral variety of English.
       # Setting locale to US will correct the British spelling of 'colour' to 'color'.
       locale: US
+      ignore-rules:
+        - lustre
+        - Lustre
     custom:
       # ref. https://github.com/uber-go/nilaway
       nilaway: