Update git submodules

* Update docs/submodules/snaps from branch 'stable/euphrates'
  - Move CreateInstancePubPrivNetTests test to staging

    CreateInstancePubPrivNetTests is failing on Fuel and it seems that the
    test is not behaving as expected on all pods. SNAPS-191 was created to
    refactor the code so until that is fixed we should not run this test
    in functest.

    JIRA: SNAPS-184

    Change-Id: I2286b9fab72e705092a521cd3611a63a8e12f855
    Signed-off-by: Cristina Pauna <cristina.pauna@enea.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 9336f79..3bfdf2b 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 9336f793daa76f8db005bfe4387805a51397af7b
+Subproject commit 3bfdf2b60da1f56294480e18d9b5c006b8859110