Update git submodules
Update git submodules

* Update plugins/replication from branch 'stable-3.1'
  to 941f5bc8b7707c691ad9456204804d2c9f291dcd
  - ReplicationTasksStorage: Handle DirectoryIteratorExceptions
    
    These exceptions wrap IOExceptions for methods whose contract doesn't
    allow them to throw an IOException. In situations where storage is NFS
    based, it's common to have Stale NFS File Handle errors when iterating a
    directory that can be moved and undesirable to log each time that
    occurs. Reuse some code from JGit and the events plugin to check for NFS
    SFH conditions.
    
    Bug: Issue 12687
    Change-Id: If833975cf12c195c8039f825e61bee13b6107c0d
    
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