Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Revert: Blueprint "bp/distributed-serialization"
    
    Until upstream fixes bug [1], partially revert blueprint
    implementation [2]:
    - fuel-agent: no-op, we overwrite fuel_bootstrap_cli.yaml anyway;
    - fuel-library: no-op, keep newly added port config in place;
    - fuel-web: revert all blueprint related changes;
    
    NOTE: When this blueprint becomes part of Fuel@OPNFV, we need to
          update our "fuel_bootstrap_cli.yaml".
    
    [1] https://bugs.launchpad.net/fuel/+bug/1676197
    [2] https://review.openstack.org/#/q/topic:bp/
        distributed-serialization+status:merged+branch:stable/newton
    
    JIRA: FUEL-265
    
    Change-Id: Icf392a3446e5c89c2592d1733bc1f3401b7d69ad
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
-Subproject cc3f3226b0e48c035549247d8a716f91675955f
+Subproject 8b28c44a4be6beef8a71e672f543001bcc0a080