Add No objects moved message

[kenneth-hendricks]

When no objects are moved the following summary is displayed:

Execute scheduled task: Object file system upload task (tool_objectfs\task\push_objects_to_storage) . Total time taken: 2.1457672119141E-6 seconds. Location change summary: ... used 6 dbqueries ... used 0.03136682510376 seconds

Location change summary is empty.

We should print a friendly message here to describe what happened.

[kenneth-hendricks]

Reproduce by setting task max runtime to 0