Bug 550028 - Use e4 FilteredTree in InstalledIUGroup

e4 FilteredTree is faster to to the usage of hashes. We plan to release
e4 FilteredTree in the next release as API.

Change-Id: Ib1b9c1a712ac29c9dd428020b13919858147939e
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
2 files changed