Update git submodules

* Update docs/submodules/policy/distribution.git from branch 'master'
  to 8acfc604a2179f7290daf4e088eb7e4acae8df56
  - Merge "Changes directory structure of S3P Tests"
  - Changes directory structure of S3P Tests

    Changes Include:
    a) Moving performance and stability tests into two separate directories.

    Change-Id: Ib98713b2c37658de16c5eb6ee8918b867bdf5b8a
    Issue-ID: POLICY-1462
    Signed-off-by: Bilal A <bilal@research.att.com>

diff --git a/docs/submodules/policy/distribution.git b/docs/submodules/policy/distribution.git
index 793c1db..8acfc60 160000 (submodule)
--- a/docs/submodules/policy/distribution.git
+++ b/docs/submodules/policy/distribution.git
@@ -1 +1 @@
-Subproject commit 793c1db47ae57311664db666b869f234a2b7874e
+Subproject commit 8acfc604a2179f7290daf4e088eb7e4acae8df56