[vpn] include vpn server public key

uncloud_net/models.py

@@ -24,6 +24,7 @@ class WireGuardVPNPool(models.Model):
 
     vpn_server_hostname = models.CharField(max_length=256)
     wireguard_private_key = models.CharField(max_length=48)
+    wireguard_public_key = models.CharField(max_length=48)
 
     @property
     def max_pool_index(self):
@@ -60,6 +61,14 @@ class WireGuardVPN(models.Model):
     def network_mask(self):
         return self.vpnpool.subnetwork_mask
 
+    @property
+    def vpn_server(self):
+        return self.vpnpool.vpn_server_hostname
+
+    @property
+    def vpn_server_public_key(self):
+        return self.vpnpool.wireguard_public_key
+
     @property
     def address(self):
         """
@@ -77,6 +86,7 @@ class WireGuardVPN(models.Model):
     def __str__(self):
         return f"{self.address} ({self.pool_index})"
 
+
 class WireGuardVPNFreeLeases(models.Model):
     """
     Previously used VPNNetworks