INF-928 Add WaitForInstance after modifying the instance on restoration

After restoring an instance, AWS keeps the default security
groups. So, odin needs to modify the instance to
adjust it, but it also needs to wait for the modification to be in
place, or the instance might not get connections right.

Refs [INF-928](https://mydevex.atlassian.net/browse/INF-928)

pkg/odin/instance_restore.go

@@ -82,6 +82,10 @@ func RestoreInstance(
 	}
 	result = *instance.Endpoint.Address
 	err = modifyInstance(instanceName, params, svc)
+	if err != nil {
+		return
+	}
+	err = WaitForInstance(instance, svc, "available")
 	return
 }