Update git submodules

* Update docs/submodules/msb/apigateway.git from branch 'dublin'
  to 6e8e0bc302aedc44d928a4a4df689690d0352e23
  - Update oparent version

    Update oparent version to 2.0.0 which supports
    global-jjb maven-stage job.

    Change-Id: I148dfe75cf77e4ddf38fb02d7ee561ef602f155d
    Issue-ID: CIMAN-234
    Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
    (cherry picked from commit d01bc93a1ab03e61b18a4cd1021a029a90d63914)

diff --git a/docs/submodules/msb/apigateway.git b/docs/submodules/msb/apigateway.git
index 03effdf..6e8e0bc 160000 (submodule)
--- a/docs/submodules/msb/apigateway.git
+++ b/docs/submodules/msb/apigateway.git
@@ -1 +1 @@
-Subproject commit 03effdf3fe72fc9ba2377323aabef97aee42a5c4
+Subproject commit 6e8e0bc302aedc44d928a4a4df689690d0352e23