[initcpio] [initramfs] Set compilation options on tests

- calamares_automoc() sets AUTOMOC, but also adds some flags
   to avoid compilation warnings from the generated MOC code.
 - drop weird hard-coded include paths

src/modules/initcpio/CMakeLists.txt

@@ -21,6 +21,5 @@ if( ECM_FOUND AND BUILD_TESTING )
             Qt5::Core
             Qt5::Test
     )
-    set_target_properties( initcpiotest PROPERTIES AUTOMOC TRUE )
-    target_include_directories( initcpiotest PRIVATE /usr/local/include )
+    calamares_automoc( initcpiotest )
 endif()

src/modules/initramfs/CMakeLists.txt

@@ -21,6 +21,5 @@ if( ECM_FOUND AND BUILD_TESTING )
             Qt5::Core
             Qt5::Test
     )
-    set_target_properties( initramfstest PROPERTIES AUTOMOC TRUE )
-    target_include_directories( initramfstest PRIVATE /usr/local/include )
+    calamares_automoc( initramfstest )
 endif()