Update git submodules

* Update mistral-lib from branch 'master'
  - Sync Sphinx requirement
    
    1. Sync sphinx dependency with global requirements. It caps python 2 since
    sphinx 2.0 no longer supports Python 2.7.
    2. Update some URLs to latest
    3. Update the UPPER_CONSTRAINTS_FILE for tox[1]
    
    [1]: refer to  http://lists.openstack.org/pipermail/openstack-discuss/2019-May/006478.html
    
    Change-Id: Id095cbd60f5a11f25a64f37b18393afbd4b4262c
This commit is contained in:
jacky06 2019-06-19 22:32:34 +08:00 committed by Gerrit Code Review
parent 7afb7669ed
commit 5b621a3d52

@ -1 +1 @@
Subproject commit b253e825b25302ffd3d9fbc6cac82ed1a617799d
Subproject commit 5f68888dce9bea399ad668f70673bddc1f06764f