Etcdctl utility container image python and Ubuntu upgrades

Currently etcdctl utility container image is built using Ubuntu 16.04
so upgrading it to use Ubuntu Bionic and also upgrading Python 2.x to
3.x.

Change-Id: I24212878fcb004f7043d78b7cffb9364cb745e97

charts/etcdctl-utility/templates/bin/_start.sh.tpl

@@ -18,7 +18,7 @@ set -ex
 sed -i 's/$PrivDropToUser syslog/$PrivDropToUser nobody/' /etc/rsyslog.conf
 /etc/init.d/rsyslog start
 
-sed -i "/rootwrap_logger.setLevel/s/.*/#&/" /usr/lib/python2.7/dist-packages/oslo_rootwrap/wrapper.py
-sed -i "/handler.setFormatter/s/.*/#&/" /usr/lib/python2.7/dist-packages/oslo_rootwrap/wrapper.py
-sed -i "/os.path.basename/s/.*/#&/" /usr/lib/python2.7/dist-packages/oslo_rootwrap/wrapper.py
-sed -i "/rootwrap_logger.addHandler/s/.*/#&/" /usr/lib/python2.7/dist-packages/oslo_rootwrap/wrapper.py
+sed -i "/rootwrap_logger.setLevel/s/.*/#&/" /usr/lib/python3/dist-packages/oslo_rootwrap/wrapper.py
+sed -i "/handler.setFormatter/s/.*/#&/" /usr/lib/python3/dist-packages/oslo_rootwrap/wrapper.py
+sed -i "/os.path.basename/s/.*/#&/" /usr/lib/python3/dist-packages/oslo_rootwrap/wrapper.py
+sed -i "/rootwrap_logger.addHandler/s/.*/#&/" /usr/lib/python3/dist-packages/oslo_rootwrap/wrapper.py

charts/etcdctl-utility/templates/bin/utility/_etcdctl-utility-rootwrap.tpl

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 {{/*
   Copyright 2019 The Openstack-Helm Authors.
 

charts/etcdctl-utility/values.yaml

@@ -26,7 +26,7 @@ release_group: null
 images:
   pull_policy: IfNotPresent
   tags:
-    etcdctl_utility: 'quay.io/airshipit/porthole-etcdctl-utility:latest-ubuntu_xenial'
+    etcdctl_utility: 'quay.io/airshipit/porthole-etcdctl-utility:latest-ubuntu_bionic'
     image_repo_sync: docker.io/docker:18.09.02
   pull_policy: "IfNotPresent"
   local_registry:

images/etcdctl-utility/Dockerfile.ubuntu_bionic

@@ -1,4 +1,4 @@
-ARG FROM=ubuntu:16.04
+ARG FROM=docker.io/ubuntu:bionic
 FROM ${FROM}
 
 LABEL org.opencontainers.image.authors='airship-discuss@lists.airshipit.org, irc://#airshipit@freenode' \
@@ -23,12 +23,11 @@ RUN set -xe && \
     apt-get install -y \
       bash \
       moreutils \
-      python-oslo.rootwrap \
+      python3 \
+      python3-pip \
       python3-oslo.rootwrap \
-      screen \
       sudo \
-      rsyslog \
-      vim && \
+      rsyslog && \
     TMP_DIR=$(mktemp --directory) && \
     cd ${TMP_DIR} && \
     curl -sSL https://github.com/coreos/etcd/releases/download/v${ETCDCTL_VERSION}/etcd-v${ETCDCTL_VERSION}-linux-amd64.tar.gz \

zuul.d/etcdctl-utility.yaml

@@ -17,7 +17,7 @@
     parent: &parent airship-porthole-images
     vars:
       image_name: &image_name porthole-etcdctl-utility
-      distro_suffix: &distro_suffix ubuntu_xenial
+      distro_suffix: &distro_suffix ubuntu_bionic
     files:
       - ^images/etcdctl-utility/.*$
       - ^charts/etcdctl-utility/.*$