Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 2e956f6332428d91afd683884de7dcf43aec5988
  - k8s: Drop support for Casablanca

    Casablanca release reached End of Life (EOL) stage on July 8th 2019 [1].

    This patch also fixes comments for test fixtures.

    This whole test subtree will be deleted upon migrating Aquasec
    kube-bench [2] for CIS Benchmark [3] integrated by Orange [4] to ONAP
    xtesting [5].

    [1] https://wiki.onap.org/display/DW/Long+Term+Roadmap
    [2] https://github.com/aquasecurity/kube-bench
    [3] https://www.cisecurity.org/benchmark/kubernetes/
    [4] https://gitlab.com/Orange-OpenSource/lfn/onap/integration/xtesting
    [5] https://git.onap.org/integration/xtesting/

    Issue-ID: SECCOM-235
    Change-Id: Ifc7d9c775c27d4cfafdd1932809288530cffceff
    Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>

diff --git a/docs/submodules/integration.git b/docs/submodules/integration.git
index e15544d..2e956f6 160000 (submodule)
--- a/docs/submodules/integration.git
+++ b/docs/submodules/integration.git
@@ -1 +1 @@
-Subproject commit e15544dfe000aa6d055b5d8bc0fadfc8f0ef5648
+Subproject commit 2e956f6332428d91afd683884de7dcf43aec5988