Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 9ee2a90a37708254f9089c0d809f1e11164da8fd
  - Add JJB for Airship installer

    This adds builder and job for simple Airship installer

    Change-Id: I0b911d6aa62df14fd18dc9f45ed6d80cbf3dc2ac
    Signed-off-by: Kaspars Skels <kaspars.skels@att.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6ccbd75..9ee2a90 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6ccbd752d0adff4f62d22586b237857fe86fc58a
+Subproject commit 9ee2a90a37708254f9089c0d809f1e11164da8fd