Update git submodules

* Update docs/submodules/policy/apex-pdp.git from branch 'master'
  to 3e4b25e5719c676246ef3b01120cbb43c9458a96
  - Merge "Rebase image on policy-base-alpine"
  - Rebase image on policy-base-alpine
    
    Issue-ID: INT-997
    Change-Id: I1a39eaf9cc0fc546eafde10d0b81a90ed5d32b13
    Signed-off-by: Dmitry Puzikov <dmitry.puzikov@tieto.com>
    
diff --git a/docs/submodules/policy/apex-pdp.git b/docs/submodules/policy/apex-pdp.git
index 8a5e150..3e4b25e 160000
--- a/docs/submodules/policy/apex-pdp.git
+++ b/docs/submodules/policy/apex-pdp.git
@@ -1 +1 @@
-Subproject commit 8a5e150732258a2bb0a402c35e398b39c65a207c
+Subproject commit 3e4b25e5719c676246ef3b01120cbb43c9458a96