Update git submodules

* Update docs/submodules/octopus from branch 'master'
  - Collecting additional information from later parts into the overview
    to keep up with discussions so far and improving overall clarity.

    Change-Id: If9367e3981f4bf9638e15fcb65320f9239166cef
    Signed-off-by: Tim Irnich <tim.irnich@ericsson.com>

diff --git a/docs/submodules/octopus b/docs/submodules/octopus
index be66e1a..d8f40b1 160000 (submodule)
--- a/docs/submodules/octopus
+++ b/docs/submodules/octopus
@@ -1 +1 @@
-Subproject commit be66e1af0e5cd0820286cfd5a6a5271c910821ee
+Subproject commit d8f40b1af7a7dd2c73f2cc2c9d3acebdb19cee2d