Fix DataUsageSummary non-indexable keys

Indexing in DataUsage was not conventional, since it
blocked adding XML based on current sim status rather than
indexing everything and changing non-indexabe keys.

Change-Id: I2097a3ac4ffd714b60299c07b29c81f246e414eb
Merged-In: I7bb3cdb0f11772bbaefb6c21c61eb63bd0b17c7e
Fixes: 64193449
Test: robotests
3 files changed