Add Qt libraries directory to LD_LIBRARY_PATH

This is to let QtKeychain find the dbus library.

Author: erikjv

test/owncloud_add_test.cmake

@@ -23,6 +23,7 @@ function(owncloud_add_test test_class)
     target_include_directories(${OWNCLOUD_TEST_CLASS}Test PRIVATE "${CMAKE_SOURCE_DIR}/test/")
     if (UNIX AND NOT APPLE)
         set_property(TEST ${OWNCLOUD_TEST_CLASS}Test PROPERTY ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+	set_property(TEST ${OWNCLOUD_TEST_CLASS}Test PROPERTY ENVIRONMENT "LD_LIBRARY_PATH=$ENV{LD_LIBRARY_PATH}:${qt_LIB_DIRS_RELEASE}")
     endif()
 
     if(WIN32)