Checker when qualifying segment for repair is now looking at pieces
location and if they are outisde segment placement puts them into
repair queue.
Fixes https://github.com/storj/storj/issues/5895
Change-Id: If0d941b30ad94c5ef02fb1a03c7f3d04a2df25c7
implemented observer and partial, created new structures to keep mon
metrics remain in same way as in segment loop
Change-Id: I209c126096c84b94d4717332e56238266f6cd004