tests: fix running with non-root user

Refs: #3418

Change-Id: If7f5c05baaff0cf748c87c77057517928539df0d
diff --git a/tests/daemon/mgmt/face-manager-process-config.t.cpp b/tests/daemon/mgmt/face-manager-process-config.t.cpp
index 0b1a156..6296fc8 100644
--- a/tests/daemon/mgmt/face-manager-process-config.t.cpp
+++ b/tests/daemon/mgmt/face-manager-process-config.t.cpp
@@ -157,6 +157,8 @@
 
 BOOST_AUTO_TEST_CASE(ProcessSectionUdp)
 {
+  SKIP_IF_NOT_SUPERUSER();
+
   const std::string CONFIG =
     "face_system\n"
     "{\n"
@@ -294,6 +296,8 @@
 
 BOOST_AUTO_TEST_CASE(ProcessSectionUdpMulticastReinit)
 {
+  SKIP_IF_NOT_SUPERUSER();
+
   const std::string CONFIG_WITH_MCAST =
     "face_system\n"
     "{\n"