Replaced hard tabs with spaces in module/manager.cpp.

Review: https://reviews.apache.org/r/26467
Fixed framework logging in master.cpp.

Review: https://reviews.apache.org/r/26159
Introduced Master <-> Slave reconciliation.

Review: https://reviews.apache.org/r/26206
Split out partition and reconciliation tests from FaultTolerace tests.

Review: https://reviews.apache.org/r/26207
Added a test for the Master <-> Slave reconciliation race.

Review: https://reviews.apache.org/r/26208