Set the container field of aconfig flags
Test: printflags --format='{package}:{container}:' | grep "::"
Bug: 312769710
Flag: NONE
Change-Id: I4fc69f563ead7206ef48278be4fb4cbcfc9cb1f7
Aconfig flag to control adding the group name to the channel name in the
DND App Settings page, to disambiguate channels that have identical
names in the list.
Test: adding flag; builds
Bug: 294333850
Change-Id: Icac50932e75b011b25b507b38433620c09680f3c