Update git submodules

* Update docs/submodules/doctor from branch 'stable/fraser'
  - Added more upstream work

    Change-Id: Ifc5bf04272add8d1d8db2b128bdc7dbae24ba5e8
    Signed-off-by: Bertrand Souville <souville@docomolab-euro.com>
    (cherry picked from commit 2870bab0ac5c7da097d2d96ca5ffcb1f1318e856)

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 4c1ff36..08f924e 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 4c1ff363e85c9f49b783c99b6f45dac66b045c60
+Subproject commit 08f924efd23f76b412d6b6e65e71983fdd11ceef