tests: unit-tests-{core,tools} no longer require a global io_service

BaseFixture is moved to tests/daemon and renamed to GlobalIoFixture

Refs: #4528
Change-Id: If9184e9f7f1d6072b0103d3ea3ca6c31a9e505c8
diff --git a/tests/daemon/mgmt/general-config-section.t.cpp b/tests/daemon/mgmt/general-config-section.t.cpp
index 98b9458..1f7188a 100644
--- a/tests/daemon/mgmt/general-config-section.t.cpp
+++ b/tests/daemon/mgmt/general-config-section.t.cpp
@@ -28,6 +28,7 @@
 #include "core/privilege-helper.hpp"
 
 #include "tests/test-common.hpp"
+#include "tests/daemon/global-io-fixture.hpp"
 
 #include <cstring>
 
@@ -37,7 +38,7 @@
 
 using namespace nfd::tests;
 
-class GeneralConfigSectionFixture : public BaseFixture
+class GeneralConfigSectionFixture : public GlobalIoFixture
 {
 public:
   GeneralConfigSectionFixture()