[3400] {bundy,kea}_backend_unittest.cc renamed to *_controller_unittest.cc

src/bin/dhcp6/tests/Makefile.am

@@ -92,12 +92,12 @@ if CONFIG_BACKEND_BUNDY
 # For Bundy backend, we only need to run the usual tests. There are no
 # Bundy-specific tests yet.
 dhcp6_unittests_SOURCES += ../bundy_controller.cc
-dhcp6_unittests_SOURCES += bundy_backend_unittest.cc
+dhcp6_unittests_SOURCES += bundy_controller_unittest.cc
 endif
 
 if CONFIG_BACKEND_JSON
 dhcp6_unittests_SOURCES += ../jsonfile_controller.cc
-dhcp6_unittests_SOURCES += jsonfile_backend_unittest.cc
+dhcp6_unittests_SOURCES += jsonfile_controller_unittest.cc
 endif
 
 nodist_dhcp6_unittests_SOURCES  = ../dhcp6_messages.h ../dhcp6_messages.cc