Update git submodules
Update git submodules

* Update plugins/delete-project from branch 'master'
  to d689466ad51bf95fc955c4639ce8e12d9b8c14b1
  - Merge branch 'stable-2.16'
    
    * stable-2.16:
      Upgrade mockito-core to 2.25.1
    
    Change-Id: Ida67ef3fe16491d275249912d1d50268807fb4b7
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      Upgrade mockito-core to 2.25.1
    
    Change-Id: I66e03f9c43a8d873bbacc7e6c2af8d05e112d6b4
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Upgrade mockito-core to 2.25.1
    
    Change-Id: I30690bc9df26ad2e34be44fc2d4f81fee5fa326d
    
  - Upgrade mockito-core to 2.25.1
    
    Change-Id: Iaab796f50fecb75a7cbc3e440ad2b661d8a74b89
    
GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit