Change Management Sync protocol to support incremental (serial) network changes (#191)

* feature: introduce NetworkMap to the management protocol with a Serial ID

* test: add Management Sync method protocol test

* test: add Management Sync method NetworkMap field check [FAILING]

* test: add Management Sync method NetworkMap field check [FAILING]

* feature: fill NetworkMap property to when Deleting peer

* feature: fill NetworkMap in the Sync protocol

* test: code review mentions - GeneratePrivateKey() in the test

* fix: wiretrustee client use wireguard GeneratePrivateKey() instead of GenerateKey()

* test: add NetworkMap test

* fix: management_proto test remove store.json on test finish

management/server/peer_test.go

@@ -0,0 +1,76 @@
+package server
+
+import (
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"testing"
+)
+
+func TestAccountManager_GetNetworkMap(t *testing.T) {
+	manager, err := createManager(t)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	expectedId := "test_account"
+	userId := "account_creator"
+	account, err := manager.AddAccount(expectedId, userId)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var setupKey *SetupKey
+	for _, key := range account.SetupKeys {
+		if key.Type == SetupKeyReusable {
+			setupKey = key
+		}
+	}
+
+	peerKey1, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	_, err = manager.AddPeer(setupKey.Key, &Peer{
+		Key:  peerKey1.PublicKey().String(),
+		Meta: PeerSystemMeta{},
+		Name: "test-peer-2",
+	})
+
+	if err != nil {
+		t.Errorf("expecting peer to be added, got failure %v", err)
+		return
+	}
+
+	peerKey2, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	_, err = manager.AddPeer(setupKey.Key, &Peer{
+		Key:  peerKey2.PublicKey().String(),
+		Meta: PeerSystemMeta{},
+		Name: "test-peer-2",
+	})
+
+	if err != nil {
+		t.Errorf("expecting peer to be added, got failure %v", err)
+		return
+	}
+
+	networkMap, err := manager.GetNetworkMap(peerKey1.PublicKey().String())
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	if len(networkMap.Peers) != 1 {
+		t.Errorf("expecting Account NetworkMap to have 1 peers, got %v", len(networkMap.Peers))
+	}
+
+	if networkMap.Peers[0].Key != peerKey2.PublicKey().String() {
+		t.Errorf("expecting Account NetworkMap to have peer with a key %s, got %s", peerKey2.PublicKey().String(), networkMap.Peers[0].Key)
+	}
+
+}