Update git submodules

* Update docs/submodules/auto from branch 'master'
  - Merge "new version of Auto configuration guide for Gambia MS6"
  - new version of Auto configuration guide for Gambia MS6

    JIRA: AUTO-53

    Updates, new content since last edit (R6.2, end of June 2018)

    Change-Id: I478008cd8e62e9d03f2c6f6094a8a4b9bf76faab
    Signed-off-by: Gerard Damm <gerard.damm@wipro.com>

diff --git a/docs/submodules/auto b/docs/submodules/auto
index fd7f2dd..b689758 160000 (submodule)
--- a/docs/submodules/auto
+++ b/docs/submodules/auto
@@ -1 +1 @@
-Subproject commit fd7f2dd057b282fcbe2adae62ba2e4e6ee4364a2
+Subproject commit b68975804233017a62c1957a06fa02176b3b274f