Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Set installer type for the tested scenario"
  - xci: Set installer type for the tested scenario

    Variables injected by envInject are set after the job variables
    which results in not setting the variable correctly. The Jenkins
    test script now uses the variable injected by envInject to set
    the INSTALLER_TYPE to XCI_INSTALLER.

    Change-Id: Id79281a2ee22d407ffb1bd7c4be1471f6f329803
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>