Update git submodules

* Update docs/submodules/calipso from branch 'master'
  - Adjusted Calipso scenario doc

    Restructured according to guidelines and added an index file to
    enable rendering.

    Change-Id: Icc984c16b98acde0ad80e22bb06d014e75d52c84
    Signed-off-by: Sofia Wallin <sofia.wallin@ericsson.com>

diff --git a/docs/submodules/calipso b/docs/submodules/calipso
index 4e5e9f7..e2240ef 160000 (submodule)
--- a/docs/submodules/calipso
+++ b/docs/submodules/calipso
@@ -1 +1 @@
-Subproject commit 4e5e9f7eaa08b4d36963be193b546d3ac84cb9e9
+Subproject commit e2240ef940939a6c0cc30ca6370aae0d42c5a4af