Cluster slot migration error processing

[BorysTheDev]

• restart process migration if the connection is failed
• try to restore a migration process if an error occurs during migration finalization
• think about other error situation

[chakaz]

Hey @BorysTheDev Can we close this bug, since you filed https://github.com/dragonflydb/dragonfly/issues/2833, https://github.com/dragonflydb/dragonfly/issues/2834 and https://github.com/dragonflydb/dragonfly/issues/2835 ?

[BorysTheDev]

no, because these tasks aren't error processing)) these tasks are for CONFIG command