Update git submodules

* Update docs/submodules/policy/engine.git from branch 'master'
  to b66330d7b5382aff22d3b29d542c6d2fe2d72abe
  - Upgrade to portal 2.6.0 release
    
    Portal released 2.6.0
    
    Issue-ID: POLICY-2045
    Change-Id: I36537fca916be71a76e36f87ede0757397883b4b
    Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
    
diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index 1d48c01..b66330d 160000
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit 1d48c011fb5368dece0a180edab9d18f8efd860a
+Subproject commit b66330d7b5382aff22d3b29d542c6d2fe2d72abe