Update git submodules

* Update docs/submodules/storperf from branch 'stable/fraser'
  - Update release notes

    Change-Id: Ifc4742dd43a267e6319f5c5a9eb66ed7de49aaa4
    Signed-off-by: Taseer Ahmed <taseer94@gmail.com>
    (cherry picked from commit 64c8b3b561ccac6159241cd0485a3259887c6bb0)

diff --git a/docs/submodules/storperf b/docs/submodules/storperf
index 77cb26a..2f8c154 160000 (submodule)
--- a/docs/submodules/storperf
+++ b/docs/submodules/storperf
@@ -1 +1 @@
-Subproject commit 77cb26aa31dab659cd2fc1fea2c206e63644acf9
+Subproject commit 2f8c1546ee5d79f9b4c46e960a74930cfe0fe50e