[shell] volume.fix.replication does not move volume files to different DC for replica_placement:100

[kmlebedev]

At the same time, volume.balance wants

volume.balance -collection registry
moving volume registry_478 fast-volume-2.dc1:8080 => fast-volume-2.dc2:8080
moving volume registry_267 fast-volume-3.dc1:8080 => fast-volume-1.dc2:8080

volume.list

      DataNode fast-volume-2.dc1:8080 volume:60/120 active:60 free:60 remote:0
        volume id:478  size:5446416696  collection:"registry"  file_count:1680  delete_count:618  deleted_byte_count:1061916457  replica_placement:100  version:3  compact_revision:7  modified_at_second:1605783149
      DataNode fast-volume-3.dc1:8080 volume:64/120 active:64 free:56 remote:0
        volume id:267  size:10579082640  collection:"registry"  file_count:9482  delete_count:423  deleted_byte_count:50011  replica_placement:100  version:3  modified_at_second:1605755270
      DataNode fast-volume-0.dc2:8080 volume:41/120 active:41 free:79 remote:0
        volume id:267  size:10579082640  collection:"registry"  file_count:9482  delete_count:423  deleted_byte_count:50011  replica_placement:100  version:3  modified_at_second:1605755270
      DataNode fast-volume-4.dc2:8080 volume:31/120 active:31 free:89 remote:0
        volume id:478  size:5446416696  collection:"registry"  file_count:1680  delete_count:618  deleted_byte_count:1061916457  replica_placement:100  version:3  compact_revision:7  modified_at_second:1605783149

[chrislusf]

Thanks! Added test cases and a fix for this.