Update git submodules

* Update docs/submodules/calipso from branch 'stable/euphrates'
  - release 1.2 + new tagging

    Change-Id: I1e876451ec4a330f458dd57adadb15e39969b225
    Signed-off-by: Koren Lev <korenlev@gmail.com>
    (cherry picked from commit 98c3ac7c859e34fe60d061b9ca591aba429e4118)

diff --git a/docs/submodules/calipso b/docs/submodules/calipso
index 78b0f48..c8440f4 160000 (submodule)
--- a/docs/submodules/calipso
+++ b/docs/submodules/calipso
@@ -1 +1 @@
-Subproject commit 78b0f48b178325c74d5609bac5c764ac111ad808
+Subproject commit c8440f4158805fed1c49d1f06cd71f324eac26a2