Update git submodules
Update git submodules

* Update plugins/download-commands from branch 'master'
  to fd650ca386c382b42d30e7ad72279bfeb311aee4
  - New command: "Reset To"
    
    Add a new command that allows to reset the current branch to the commit
    that was fetched. This is useful in cases when the user is working on a
    local branch and the existing commands are not appropriate:
    
    - "Checkout" will check out the FETCH_HEAD, i.e. moving off the current
      branch and leaving the local repository in 'detached head' state.
    
    - "Cherry-Pick" will commit the fetched change again, resulting in a
      'new' commit (i.e. changed sha1) which will result in a new patch set
      if the user creates any commits on top of it and pushes for review.
    
    Change-Id: I683f88aa0d8ad6a6dd91f341bd23d363d329e174
    
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