Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Update and add test case

    Fault management test case update
    Adding maintenance test csae

    Change-Id: I4ba1e445aa9f801c4e539257fff538253675537d
    Signed-off-by: Tomi Juvonen <tomi.juvonen@nokia.com>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index da25598..495965d 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit da25598a6a31abe0579ffed12d1719e5ff75f9a7
+Subproject commit 495965d0336d42fc36494c81fd15cee2f34c96e9