devices/config: replace omitempty with omitzero

This is technically a no-op, but let's change it for consistency.

While at it, move linter-extra exceptions to golangci-extra.yml.

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

.golangci-extra.yml

@@ -25,3 +25,5 @@ linters:
         text: "(type|struct field) (CpuUsage|CpuStats) should be "
       - path: config_linux.go
         text: "struct field (CpuShares|CpuQuota|CpuBurst|CpuPeriod|CpuRtRuntime|CpuWeight) should be "
+      - path: devices/config/device.go
+        text: "struct field (Uid|Gid) should be "

devices/config/device.go

@@ -20,10 +20,10 @@ type Device struct {
 	FileMode os.FileMode `json:"file_mode"`
 
 	// Uid of the device.
-	Uid uint32 `json:"uid,omitempty"` //nolint:revive // Suppress "var-naming: struct field Uid should be UID".
+	Uid uint32 `json:"uid,omitzero"`
 
 	// Gid of the device.
-	Gid uint32 `json:"gid,omitempty"` //nolint:revive // Suppress "var-naming: struct field Gid should be GID".
+	Gid uint32 `json:"gid,omitzero"`
 }
 
 // Permissions is a cgroupv1-style string to represent device access. It