SAMZA-47; split leveldb and l1 object cache configs so they each have their own config value.
SAMZA-147; add generic stream metadata api to SystemAdmin.
Revert "SAMZA-147; add generic stream metadata api to SystemAdmin."

Merge did not happen properly. Tests are failing.

This reverts commit 6cbe515a3740e9c3b009ab44d37dd523eadad4ad.
SAMZA-147; add generic stream metadata api to SystemAdmin.