Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - bifrost: Use the pre-built XCI OS images instead of dib
    
    We already have images for all 3 distros which we could simply re-use
    for all the XCI VM deployments instead of building new ones everytime
    with DIB. The images will be copied to the new VM from the cache
    directory if they are available otherwise we will simply download them
    during the XCI execution phase.
    
    Change-Id: I2a8391650558511668654c6b54a10db316f867a2
    Signed-off-by: Markos Chandras <mchandras@suse.de>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
-Subproject c4651cc986ac5277d95027df77bc42cc783f277
+Subproject e66847184999a84c472648e78d71e12b7c5b23d