Symptom:
This DDTS address two issues,
Issue 1: slice_mgr_proxy is restarted prior to slices are up, then the slices will not come up.

Issue 2: (display issue )show platform slices output shows 'Oper' state as 'unknown' for all the slices of a LC, even though the slices are initialized and interfaces are created

Conditions:
For issue 1.when slices are not up, and slice mgr proxy is restarted, we might get into a state where slice mgr proxy will not power up the slices after restart.

For Issue 2: shelf_mgr restart on the respective LC.