Revert "Revert "Revert "Revert "Revert "Revert "Changing GridMigrationTask to use ModelDbController directly""""""

This reverts commit 09905cfa90a46b5fb4868d0ba4963f9c45e3f336.

Reason for revert: Fixed the crashing issue

Change-Id: Ibcfc28a89356d262e67e8842d6bae37e230a70f5
19 files changed