Changes

tmf: Fix IDE error in o.e.tc.tmf.core.config.exsd

This patch fixes the error below, reported by the Eclipse IDE:
Element 'attribute' with use set to 'default' must have the attribute
'value' defined.

Change-Id: Idc737f6c4dccc9b83ecc1e4c302f76b627babfe2
Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>