Update git submodules

* Update docs/submodules/portal.git from branch 'master'
  to ef67fd57dbc005668f7309129100353f24832455
  - Merge "EPAppServiceImpl class fix."
  - EPAppServiceImpl class fix.

    Sonar issues fix:
    Remove this unused "logger" private field.
    Remove this unused "syncRests" private field.

    unused imports delete and unneeded fields initialization fix.
    StringBuilder performance fix.

    Issue-ID: PORTAL-620
    Change-Id: Ibd1cf732b216594b47801767d0a98e59b0aba200
    Signed-off-by: Dominik Mizyn <d.mizyn@samsung.com>

diff --git a/docs/submodules/portal.git b/docs/submodules/portal.git
index a2c93d2..ef67fd5 160000 (submodule)
--- a/docs/submodules/portal.git
+++ b/docs/submodules/portal.git
@@ -1 +1 @@
-Subproject commit a2c93d258e4c564880601470434a7c0e168785c8
+Subproject commit ef67fd57dbc005668f7309129100353f24832455