Fixes Bug 1436- docker/tests/Dockerfile cryptography dependencies

Change-Id: I5169337e0a2859b117554955bed866174cef04ac
Signed-off-by: João Fonseca <jpedrofonseca@av.it.pt>
diff --git a/installers/docker/osm_pla/pla.yaml b/installers/docker/osm_pla/pla.yaml
index c5bdd50..39f1b9d 100644
--- a/installers/docker/osm_pla/pla.yaml
+++ b/installers/docker/osm_pla/pla.yaml
@@ -35,7 +35,7 @@
          command: ["sh", "-c", "until (nc -zvw1 kafka 9092 && nc -zvw1 mongo 27017 ); do sleep 3; done; exit 0"]
       containers:
       - name: pla
-        image: opensourcemano/pla:7
+        image: opensourcemano/pla:8
         env:
         - name: OSMPLA_DATABASE_HOST
           value: mongo