A minor docker-engine update

Update docker-engine from 17.03.1 to 17.03.3.

Change-Id: Ie9178d548a3b8e01172de172e9086fefadb277a6

global/software/config/versions.yaml

@@ -589,7 +589,7 @@ data:
       =Fm3p
       -----END PGP PUBLIC KEY BLOCK-----
     named:
-      docker: docker-engine=17.03.1~ce-0~ubuntu-xenial
+      docker: docker-engine=17.03.3~ce-0~ubuntu-xenial
       socat: socat=1.7.3.1-1
     repositories:
       docker: