To know exactly when the evacuation was completed,
a conditional variable was added.
Closes#1705
Change-Id: I86f6d7d2ad2b9759905b6b5e9341008cb74f5dfd
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Now it's possible to run evacuate shard in async.
Also only one evacuate process can be in progress.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>