Update git submodules
Update git submodules

* Update plugins/gitiles from branch 'master'
  to 648b1df92b887ed5011e3a2fbf18fd2b9e8622b3
  - Support clone url type configuration
    
    Setting gerrit.cloneUrlType in the plugin config to change clone url
    type from default ssh (if ssh is enabled) to http or git.
    
    Change-Id: I120863e0829f6ec7aecd041fbdf87ed1228a8746
    
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