Completely switch to python3 for developers installation

This addresses an issue with using py2 as interpreter while
installing required dependencies with py3.

Also switch kubeadm-aio image to bionic.

Change-Id: I5a9e6678c45fad8288aa6971f57988b46001c665
Signed-off-by: Andrii Ostapenko <andrii.ostapenko@att.com>

playbooks/vars.yaml

@@ -13,5 +13,5 @@
 # NOTE(portdirect): for use in the dev-deploy scripts, a valid vars.yaml is
 # required, so provide some nonsense, yet harmless input.
 ---
-dummy_value: "Lorem Ipsum"
+ansible_python_interpreter: python3
 ...

roles/deploy-python-pip/tasks/main.yaml

@@ -12,7 +12,7 @@
 
 ---
 - name: check if pip installed
-  command: pip --version
+  command: pip3 --version
   register: pip_version_output
   ignore_errors: yes
   changed_when: false
@@ -20,25 +20,25 @@
 - name: ensuring python pip package is present for ubuntu
   when: ( pip_version_output is failed ) and ( ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu' )
   apt:
-    name: python-pip
+    name: python3-pip
     state: present
 
 - name: ensuring python pip package is present for centos
   when: ( pip_version_output is failed ) and ( ansible_distribution == 'CentOS' or ansible_distribution == 'Red Hat Enterprise Linux' )
   block:
-    - name: ensuring epel-release package is present for centos as python-pip is in the epel repo
+    - name: ensuring epel-release package is present for centos as python3-pip is in the epel repo
       yum:
         name: epel-release
         state: present
     - name: ensuring python pip package is present for centos
       yum:
-        name: python-pip
+        name: python3-pip
         state: present
 
-- name: ensuring python pip package is present for fedora via the python2-pip rpm
+- name: ensuring python pip package is present for fedora via the python3-pip rpm
   when: ( pip_version_output is failed ) and ( ansible_distribution == 'Fedora' )
   dnf:
-    name: python2-pip
+    name: python3-pip
     state: present
 
 - name: ensuring pip is the latest version
@@ -51,4 +51,5 @@
   pip:
     name: pip
     state: latest
+    executable: pip3
 ...

roles/deploy-python/tasks/main.yaml

@@ -11,6 +11,6 @@
 # limitations under the License.
 
 ---
-- name: ensuring python2 is present on all hosts
-  raw: test -e /usr/bin/python || (sudo apt -y update && sudo apt install -y python-minimal) || (sudo yum install -y python) || (sudo dnf install -y python2)
+- name: ensuring python3 is present on all hosts
+  raw: test -e /usr/bin/python3 || (sudo apt -y update && sudo apt install -y python3-minimal) || (sudo yum install -y python3) || (sudo dnf install -y python3)
 ...

tools/image-repo-overides.sh

@@ -31,4 +31,4 @@ ALL_IMAGES="${KUBE_IMAGES} ${CHART_IMAGES}"
 jq -n -c -M \
 --arg devclass "$(echo ${ALL_IMAGES})" \
 '{"bootstrap": {"preload_images": ($devclass|split(" "))}}' | \
-python -c 'import sys, yaml, json; yaml.safe_dump(json.load(sys.stdin), sys.stdout, default_flow_style=False)'
+python3 -c 'import sys, yaml, json; yaml.safe_dump(json.load(sys.stdin), sys.stdout, default_flow_style=False)'

tools/images/kubeadm-aio/Dockerfile

@@ -10,7 +10,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM docker.io/ubuntu:xenial
+FROM docker.io/ubuntu:bionic
 MAINTAINER pete.birley@att.com
 
 ARG UBUNTU_URL=http://archive.ubuntu.com/ubuntu/

tools/images/kubeadm-aio/assets/opt/playbooks/vars.yaml

@@ -13,6 +13,7 @@
 ---
 all:
   vars:
+    ansible_python_interpreter: python3
     my_container_name: null
     user:
       uid: null

tools/images/kubeadm-aio/sources.list

@@ -1,4 +1,4 @@
-deb %%UBUNTU_URL%% xenial main universe
-deb %%UBUNTU_URL%% xenial-updates main universe
-deb %%UBUNTU_URL%% xenial-backports main universe
-deb %%UBUNTU_URL%% xenial-security main universe
+deb %%UBUNTU_URL%% bionic main universe
+deb %%UBUNTU_URL%% bionic-updates main universe
+deb %%UBUNTU_URL%% bionic-backports main universe
+deb %%UBUNTU_URL%% bionic-security main universe