[build] Fix packaging metadata for some plug-ins

Change-Id: Ic86cb9df77227ef65ab6302b082699bb432f1263
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
[445603] Make the new DASI.doSave() method protected

Although it is an internal class, some use cases may require to override
Session.save(). Given that the actual saving is now performed in
doSave(), make it protected so that it can be overriden instead of
save().

Bug: 445603
Change-Id: I2f4ab6d4b082323cf27c056e7f6279e8db2ef842
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
[445603] Make DASI.Saver configurable using internal "API"

Bug: 445603
Change-Id: I248580488bf4b619a2ba1eb90b92d63b0360bb47
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
[445603] Fix typo in method name

Bug: 445603
Change-Id: If75d2079847a6cb6e2bcabbe41635a8e1f86f6bd
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>