[cts] fix feature checking for incremental metrics tests

A utility function was changed but the tests didn't fail because they
were all skipped by mistake. Fix the feature checking so that the tests
will run in the matching devices.

BUG: 197784344
Test: atest CtsPackageManagerStatsHostTestCases
Change-Id: I328a88d5df7a2aefcef7a2953f9991313a3ff06f
5 files changed