Update git submodules

* Update diskimage-builder from branch 'master'
  - Merge "Constraint networkx to <2.3 for Python 2"
  - Constraint networkx to <2.3 for Python 2
    
    NetworkX released 2.3, dropping support for Python 2.
    
    https://github.com/networkx/networkx/blob/master/doc/news.rst
    
    Depends-On: https://review.openstack.org/#/c/652094
    
    Change-Id: I59afe81d7868605434d2a42658c5b09a6a546732
This commit is contained in:
Zuul 2019-04-18 16:33:30 +00:00 committed by Gerrit Code Review
parent ae1967f3b3
commit ce7852a376

@ -1 +1 @@
Subproject commit 6a4bf78e0ce812f81efe5bec487a450c27595fc1
Subproject commit dee382209ac5932501207d48c25bd9bc4a12a4c1