Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "change swagger urls based on v1.2 specification"
  - change swagger urls based on v1.2 specification

    According to swagger1.2 specification, The Swagger specification
    is comprised of two file types: The Resources Listing and The
    API Declaration.

    https://github.com/OAI/OpenAPI-Specification/blob/master/versions/1.2.md

    Change-Id: I8f92897e41dbf6d4d2c3b1fe64ea6729f04cf3ad
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>