Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Remove SERVER_URL in reporting deploy job
    
    Since we improved the reporting deploy way, the SERVER_URL is set
    to http://testresults.opnfv.org/reporting2 by default. So we don't
    need to set it.
    
    So we have to ways:
    In CI:
        docker run -itd -p 8084:8000 opnfv/reporting:tag
    Personal use:
        docker run -itd -p 8084:8000 -e SERVER_URL={server_ip}:8084 opnfv/reporting:tag
        (8084 is the port mapping, you can change it)
    
    Change-Id: Ibe8adbb4601378d59d4d1fe6c7dd3266222c47d1
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>
    

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