Remove docker.io version pin

Change-Id: Id45132d8476ca931042dddc4544074e26135f9fc
Signed-off-by: Steve Wilkerson <sw5822@att.com>

roles/deploy-docker/tasks/main.yaml

@@ -60,7 +60,7 @@
   vars:
     packages:
       deb:
-        - docker.io=18.06.1-0ubuntu1.2~18.04.1
+        - docker.io
       rpm:
         - docker
 

tools/deployment/common/005-deploy-k8s.sh

@@ -62,9 +62,8 @@ RELEASE_NAME=$(grep 'CODENAME' /etc/lsb-release | awk -F= '{print $2}')
 sudo add-apt-repository "deb https://download.ceph.com/debian-mimic/
 ${RELEASE_NAME} main"
 sudo -E apt-get update
-# NOTE(srwilkers): Pin docker version to validated docker version for k8s 1.12.2
 sudo -E apt-get install -y \
-    docker.io=18.06.1-0ubuntu1.2~18.04.1 \
+    docker.io \
     socat \
     jq \
     util-linux \