[Blockstore] EndpointProxySocketPath option should have priority over…

… NbdNetlink option, otherwise endpoint proxy may become accidentally disabled if someone enables NbdNetlink (#2543)

cloud/blockstore/libs/daemon/common/bootstrap.cpp

@@ -526,6 +526,8 @@ void TBootstrapBase::Init()
         .NbdDevicePrefix = Configs->ServerConfig->GetNbdDevicePrefix(),
     };
 
+    NBD::IDeviceFactoryPtr nbdDeviceFactory;
+
     if (Configs->ServerConfig->GetEndpointProxySocketPath()) {
         EndpointProxyClient = NClient::CreateClient(
             {
@@ -539,26 +541,22 @@ void TBootstrapBase::Init()
             Scheduler,
             Timer,
             Logging);
-    }
 
-    NBD::IDeviceFactoryPtr nbdDeviceFactory;
+        const ui32 defaultSectorSize = 4_KB;
 
-    if (Configs->ServerConfig->GetNbdNetlink()) {
+        nbdDeviceFactory = NClient::CreateProxyDeviceFactory(
+            {defaultSectorSize},
+            EndpointProxyClient);
+    }
+
+    if (!nbdDeviceFactory && Configs->ServerConfig->GetNbdNetlink()) {
         nbdDeviceFactory = NBD::CreateNetlinkDeviceFactory(
             Logging,
             Configs->ServerConfig->GetNbdRequestTimeout(),
             Configs->ServerConfig->GetNbdConnectionTimeout(),
             true);  // reconfigure
     }
 
-    if (!nbdDeviceFactory && EndpointProxyClient) {
-        const ui32 defaultSectorSize = 4_KB;
-
-        nbdDeviceFactory = NClient::CreateProxyDeviceFactory(
-            {defaultSectorSize},
-            EndpointProxyClient);
-    }
-
     // The only case we want kernel to retry requests is when the socket is dead
     // due to nbd server restart. And since we can't configure ioctl device to
     // use a new socket, request timeout effectively becomes connection timeout