Moving connectDevices() for Netconf and Rest in activate to executor

Change-Id: I545aa19dad8f6c0f4d429052214e8d9df569a059

@@ -118,7 +118,7 @@ public class NetconfDeviceProvider extends AbstractProvider
         cfgService.registerConfigFactory(factory);
         cfgService.addListener(cfgLister);
         controller.addDeviceListener(innerNodeListener);
-        connectDevices();
+        executor.execute(NetconfDeviceProvider.this::connectDevices);
         log.info("Started");
     }
 

@@ -130,7 +130,7 @@ public class RestDeviceProvider extends AbstractProvider
         providerService = providerRegistry.register(this);
         cfgService.registerConfigFactory(factory);
         cfgService.addListener(cfgLister);
-        connectDevices();
+        executor.execute(RestDeviceProvider.this::connectDevices);
         log.info("Started");
     }