Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 893b3ad8f4b985c35e9f24346eca515e6bc251e8
  - Merge "Change Yaml to Json payload"
  - Change Yaml to Json payload

    Change the operational policy payload from Yaml to a JSon, yaml being
    embedded as URLEncoded

    Issue-ID: CLAMP-359
    Change-Id: I8c97bb155e6136ce37c29a65a7d9d85e21fedd61
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>

diff --git a/docs/submodules/clamp.git b/docs/submodules/clamp.git
index d4976b7..893b3ad 160000 (submodule)
--- a/docs/submodules/clamp.git
+++ b/docs/submodules/clamp.git
@@ -1 +1 @@
-Subproject commit d4976b71508b2a3670167b7f0f412d3bfdd6ce54
+Subproject commit 893b3ad8f4b985c35e9f24346eca515e6bc251e8