[management] Persist peer flags in meta updates (#3958)

This PR adds persistence for peer feature flags when updating metadata, including equality checks, gRPC extraction, and corresponding unit tests.

- Introduce a new `Flags` struct with `isEqual` and incorporate it into `PeerSystemMeta`.
- Update `UpdateMetaIfNew` logic to consider flag changes.
- Extend gRPC server’s `extractPeerMeta` to populate `Flags` and add tests for `Flags.isEqual`.

management/server/peer/peer.go

@@ -94,6 +94,22 @@ type File struct {
 	ProcessIsRunning bool
 }
 
+// Flags defines a set of options to control feature behavior
+type Flags struct {
+	RosenpassEnabled    bool
+	RosenpassPermissive bool
+	ServerSSHAllowed    bool
+
+	DisableClientRoutes bool
+	DisableServerRoutes bool
+	DisableDNS          bool
+	DisableFirewall     bool
+	BlockLANAccess      bool
+	BlockInbound        bool
+
+	LazyConnectionEnabled bool
+}
+
 // PeerSystemMeta is a metadata of a Peer machine system
 type PeerSystemMeta struct { //nolint:revive
 	Hostname           string
@@ -111,6 +127,7 @@ type PeerSystemMeta struct { //nolint:revive
 	SystemProductName  string
 	SystemManufacturer string
 	Environment        Environment `gorm:"serializer:json"`
+	Flags              Flags       `gorm:"serializer:json"`
 	Files              []File      `gorm:"serializer:json"`
 }
 
@@ -155,7 +172,8 @@ func (p PeerSystemMeta) isEqual(other PeerSystemMeta) bool {
 		p.SystemProductName == other.SystemProductName &&
 		p.SystemManufacturer == other.SystemManufacturer &&
 		p.Environment.Cloud == other.Environment.Cloud &&
-		p.Environment.Platform == other.Environment.Platform
+		p.Environment.Platform == other.Environment.Platform &&
+		p.Flags.isEqual(other.Flags)
 }
 
 func (p PeerSystemMeta) isEmpty() bool {
@@ -315,3 +333,16 @@ func (p *Peer) UpdateLastLogin() *Peer {
 	p.Status = newStatus
 	return p
 }
+
+func (f Flags) isEqual(other Flags) bool {
+	return f.RosenpassEnabled == other.RosenpassEnabled &&
+		f.RosenpassPermissive == other.RosenpassPermissive &&
+		f.ServerSSHAllowed == other.ServerSSHAllowed &&
+		f.DisableClientRoutes == other.DisableClientRoutes &&
+		f.DisableServerRoutes == other.DisableServerRoutes &&
+		f.DisableDNS == other.DisableDNS &&
+		f.DisableFirewall == other.DisableFirewall &&
+		f.BlockLANAccess == other.BlockLANAccess &&
+		f.BlockInbound == other.BlockInbound &&
+		f.LazyConnectionEnabled == other.LazyConnectionEnabled
+}