Feat rego default policy (#700)

Converts rules to Rego policies and allow users to write raw policies to set up connectivity and firewall on the clients.

management/server/management_test.go

@@ -2,7 +2,6 @@ package server_test
 
 import (
 	"context"
-	"github.com/netbirdio/netbird/management/server/activity"
 	"math/rand"
 	"net"
 	"os"
@@ -11,6 +10,8 @@ import (
 	sync2 "sync"
 	"time"
 
+	"github.com/netbirdio/netbird/management/server/activity"
+
 	server "github.com/netbirdio/netbird/management/server"
 	"google.golang.org/grpc/credentials/insecure"
 
@@ -29,6 +30,7 @@ import (
 
 const (
 	ValidSetupKey = "A2C8E62B-38F5-4553-B31E-DD66C696CEBB"
+	AccountKey    = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
 )
 
 var _ = Describe("Management service", func() {