Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to f2ec458f12c470552462a75f26ef7e1704482a72
  - Update docker images in integration override
    
    Issue-ID: INT-1414
    Signed-off-by: Marco Platania <platania@research.att.com>
    Change-Id: Iabc25330dd803bedcaa8c321b5ff45619782884e
    
diff --git a/docs/submodules/integration.git b/docs/submodules/integration.git
index b0accc3..f2ec458 160000
--- a/docs/submodules/integration.git
+++ b/docs/submodules/integration.git
@@ -1 +1 @@
-Subproject commit b0accc3b42d9fa079d30ad6c5d32129e084a1ab9
+Subproject commit f2ec458f12c470552462a75f26ef7e1704482a72