Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - 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 cef5b45..f53a90c 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit cef5b452099579a3f69a5c233b7ba25bd0d80f5c
+Subproject commit f53a90c63227c9faca8c8f7da6fa0dff48538662