Fix ConfigTest.cpp and cert.cpp so they compile

This was broken since ZNCDebug.cpp was introduced

modules/cert.cpp

@@ -8,6 +8,7 @@
 
 #define REQUIRESSL
 
+#include "FileUtils.h"
 #include "User.h"
 #include "Modules.h"
 #include "IRCSock.h"

test/ConfigTest.cpp

@@ -6,6 +6,8 @@
  * by the Free Software Foundation.
  */
 
+#include "ZNCDebug.h"
+#include "FileUtils.h"
 #include "Config.h"
 #include <cstdlib>
 

test/Makefile.in

@@ -11,7 +11,7 @@ LIBS     := @LIBS@
 
 TARGETS  := ConfigTest
 OBJS     := $(addsuffix .o, $(TARGETS))
-ZNC_OBJS := Config.o FileUtils.o Utils.o ZNCString.o MD5.o SHA256.o
+ZNC_OBJS := Config.o ZNCDebug.o FileUtils.o Utils.o ZNCString.o MD5.o SHA256.o
 ZNC_OBJS := $(addprefix ../, $(ZNC_OBJS))
 
 ifneq "$(V)" ""