Update git submodules
Update git submodules

* Update plugins/gitiles from branch 'stable-3.4'
  to e7a4e5521d59abaf6942c48f52bbe9e4bec1bf29
  - Merge branch 'stable-3.4-2021-07' into stable-3.4
    
    * stable-3.4-2021-07:
      Hide repository name and description when user has no access
    
    Change-Id: Ic9b8a0e0f8068892a553b3a6b57ea03c6e1c5e8b
    
  - Merge branch 'stable-3.3-2021-07'
    
    * stable-3.3-2021-07:
      Hide repository name and description when user has no access
    
    Change-Id: I98782278bcad51e49e91511dd30be9337c6ce670
    
  - Merge branch 'stable-3.2-2021-07'
    
    * stable-3.2-2021-07:
      Hide repository name and description when user has no access
    
    Change-Id: Ibea3774aebdc41dd80169ee55d95002fec76b6ea
    
  - Merge branch 'stable-3.1-2021-07'
    
    * stable-3.1-2021-07:
      Hide repository name and description when user has no access
    
    Change-Id: I1ee7817f899326667675ee221aeeb1cdb84c2f9c
    
  - Hide repository name and description when user has no access
    
    Gitiles did not respect Gerrit's permission and would show the
    repo name and description to any user who could guess the name.
    The repositories list as well as the conent APIs were not affected.
    
    This commit adds integration tests and fixes the problem.
    
    Bug: Issue 7282
    Change-Id: Icdca15b8f5e2b15e4a9f174a6ffdf366d1ff22a9
    
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